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SPECIES
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FAMILY
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COMMON NAME
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ORIGIN
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COMMENTS
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| PTERIDOPHYTES (FERNS & ALLIES) | ||||
| Adiantum pedatum L. | Adiantaceae | Maidenhair fern | native | |
| Asplenium platyneuron (L.) Oakes ex DC. | Aspleniaceae | Ebony spleenwort | native | Sandy open woods and thickets. |
| Asplenium rhizophyllum L. [=Camptosorus rhizophyllus (L.) Link] | Aspleniaceae | Walking fern | native | Very common on rocky bluffs and rock outcroppings. |
| Athyrium filix-femina (L.) Roth var.angustum (Willd.) Moore | Aspleniaceae | Northern lady fern | native | |
| Athyrium pycnocarpon (Sprengel) Tidestrom [=Diplazium pycnocarpon (Sprengel) Broun] | Aspleniaceae | Narrow-leaved spleenwort | native | Lower slopes of rocky bluffs in rich soil, also along streams. Proposed as a special concern species in 1998. |
| Athyrium thelypterioides (Michx.) Desv. [=Deparia acrostichoides (Sw.) M. Kato ined.] | Aspleniaceae | Silvery spleenwort | native | Rich, wooded slopes. |
| Botrychium dissectum Sprengel f. obliquum (Muhl.) Fern. | Ophioglossaceae | Oblique grape fern | native | Both forms usually found together. |
| Botrychium dissectum Sprengel f. dissectum | Ophioglossaceae | Dissected grape fern | native | Both forms usually found together. |
| Botrychium virginianum (L.) Sw. | Ophioglossaceae | Rattlesnake fern | native | |
| Cystopteris bulbifera (L.) Bernh. | Aspleniaceae | Bulblet bladder fern | native | Rocky bluffs and outcrops. |
| Cystopteris protrusa (Weath.) Blasdell | Aspleniaceae | Creeping fragile fern | native | |
| Dryopteris carthusiana (Vill.) H.P. Fuchs [=D. spinulosa (O.F. Muell.) Watt] | Aspleniaceae | Spinulose wood fern | native | Base of bluff with northern orientation, rich woodland. |
| Dryopteris goldiana (Hooker) Gray | Aspleniaceae | Goldies fern | native | |
| Equisetum arvense L. | Equisetaceae | Common horsetail | native | Stream bank, sandy floodplain opening. |
| Equisetum hyemale L. var. affine (Engelm.) A.A. Eaton | Equisetaceae | Scouring-rush | native | Alluvial woods, riparian. |
| Matteuccia struthiopteris (L.) Todaro var. pensyvanica (Willd.) Morton | Aspleniaceae | Ostrich fern | native | Also growing in opening under electrical transmission lines. |
| Onoclea sensibilis L. | Aspleniaceae | Sensitive fern | native | |
| Osmunda claytoniana L. | Osmundaceae | Interrupted fern | native | Nice, large stands locally. |
| Pellaea glabella Mett. ex Kuhn | Adiantaceae | Smooth cliff-brake | native | Infrequent, steep rock outcroppings, exposed rock in prarie/savanna area. |
| Polystichum acrostichoides (Michx.) Schott | Aspleniaceae | Christmas fern | native | |
| Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex Heller | Dennstaedtiaceae | Bracken fern | native | |
| GYMNOSPERMS (CONIFERS) | ||||
| Juniperus virginiana L. | Cupressaceae | Red cedar | native | |
| Taxus canadensis Marsh. | Taxaceae | American yew | native | Limited to the rims of the larger bluffs where it is locally common. |
| ANGIOSPERMS: DICOTYLEDONS | ||||
| Acalypha rhomboidea Raf. | Euphorbiaceae | Three-seeded mercury | native | Riparian, sandbars. |
| Acalypha virginica L. | Euphorbiaceae | Three-seeded mercury | native | Bluff top. |
| Acer negundo L. | Aceraceae | Box elder | native | |
| Acer saccharinum L. | Aceraceae | Silver maple | native | Major componant of the floodplains. |
| Acer saccharum Marsh. | Aceraceae | Sugar maple | native | Common in rich uplands. |
| Achillea millefolium L. | Asteraceae | Yarrow | native | Sandy openings in woods, and pastured areas. |
| Actaea pachypoda Ell. | Ranunculaceae | White baneberry | native | |
| Agastache nepetoides (L.) Kuntze | Lamiaceae | Yellow giant-hyssop | native | |
| Agastache scrophulariifolia (Willd.) Kuntze | Lamiaceae | Purple giant-hyssop | native | |
| Agrimonia gryposepala Wallr. | Rosaceae | Agrimony | native | Open woods, Shrubby areas. |
| Alliaria petiolata (Bieb.) Cavara & Grande | Brassicaceae | Garlic mustard | Europe | Most common along river, following alluvial soil inland. Although absent from some areas, on a whole very well established throughout Preserve. |
| Amaranthus rudis Sauer | Amaranthaceae | Amaranth | native | Riparian (sandbars). |
| Amaranthus tuberculatus (Moq.) Sauer | Amaranthaceae | Water hemp | native | Riparian. |
| Ambrosia artemisiifolia L. | Asteraceae | Common ragweed | native | |
| Ambrosia trifida L. | Asteraceae | Giant ragweed | native | |
| Amelanchier arborea (Michx. f.) Fern. | Rosaceae | Serviceberry | native | |
| Amorpha canescens Pursh | Fabaceae | Leadplant | native | Relict prairie. |
| Amphicarpaea bracteata (L.) Fern. | Fabaceae | Hog peanut | native | |
| Anemone canadensis L. | Ranunculaceae | Canada anemone | native | Moist soil. |
| Anemone quinquefolia L. | Ranunculaceae | Wood anemone | native | Moist slopes and floodplains. |
| Anemone virginiana L. | Ranunculaceae | Tall anemone | native | |
| Antennaria plantaginifolia (L.) Richardson | Asteraceae | Ladies' tobacco | native | Top of bluffs with southern exposure, savanna like areas, and pastured areas. |
| Apios americana Medicus | Fabaceae | Ground-nut | native | |
| Apocynum androsaemifolium L. | Apocynaceae | Spreading dogbane | native | Woodland openings and prairie/savanna area. |
| Apocynum cannabinum L. | Apocynaceae | Indian hemp | native | |
| Aquilegia canadensis L. | Ranunculaceae | Columbine | native | Usually on rock outcrops. |
| Arabis glabra (L.) Bernh. | Brassicaceae | Tower mustard | native | Sandy pastured areas. |
| Arabis laevigata (Muhl. ex Willd.) Poiret | Brassicaceae | Rock cress | native | Frequently seen in areas of exposed bedrock, on outcrops of rock and shallow soil. |
| Arabis shortii (Fern.) Gl. | Brassicaceae | Rock cress | native | Frequently seen, rock bluffs and outcrops, alluvial soil. |
| Aralia racemosa L. | Araliaceae | Spikenard | native | Infrequent, sheltered areas of northern oriented bluffs. |
| Arctium minus Bernh. | Asteraceae | Burdock | Eurasia | Open disturbed sandy soil, riparian.. |
| Artemisia ludoviciana Nutt. incl. var. gnaphalodes (Nutt.) T&G | Asteraceae | White sage | native | Generally found along river banks, and in clearings under high voltage power lines, the var. gnaphalodes however is confined to a sandy pastured area in the SE section. |
| Asarum canadense L. | Aristolochiaceae | Wild ginger | native | |
| Asclepias exaltata L. | Asclepiadaceae | Poke milkweed | native | Open upland woods. |
| Asclepias incarnata L. | Asclepiadaceae | Swamp milkweed | native | Rare, sandy alluvium. |
| Asclepias syriaca L. | Asclepiadaceae | Common milkweed | native | Open areas of light disturbance. |
| Asclepias verticillata L. | Asclepiadaceae | Whorled milkweed | native | Open areas, not common. |
| Aster cordifolius L. [=A.cordifolius L. var. sagittifolius (Wedem. ex Willd.) A.G. Jones] | Asteraceae | Blue wood aster | native | Upland woods and bluffs. |
| Aster ericoides L. | Asteraceae | Heath aster | native | Woodland edge, dry soil. |
| Aster lateriflorus (L.) Britton | Asteraceae | Side-flowered aster | native | Woodland edge, dry soil. |
| Aster oblongifolius Nutt. | Asteraceae | Aromatic aster | native | Open woods, bluff with southern orientation. |
| Aster ontarionis Wieg. | Asteraceae | Ontario aster | native | Frequently seen on floodplain. |
| Aster pilosus Willd. | Asteraceae | Hairy aster | native | Sandy opening. |
| Aster shortii Lindley | Asteraceae | Short's aster | native | Bluffs. |
| Barbarea vulgaris R. Br. | Brassicaceae | Yellow rocket | Eurasia | Infrequent. |
| Betula nigra L. | Betulaceae | River birch | native | Riparian. |
| Bidens cernua L. | Asteraceae | Bur marigold | native | Riparian. |
| Bidens connata Muhl. ex Willd. | Asteraceae | Beggar-ticks | native | Sandbars and mudflats. |
| Bidens frondosa L. | Asteraceae | Beggar-ticks | native | Riparian. |
| Blephilia hirsuta (Pursh) Bentham | Lamiaceae | Woodmint | native | Common in moist woodland, usually along drainage areas. |
| Boehmeria cylindrica (L.) Sw. | Urticaceae | Bog hemp | native | |
| Cacalia muhlenbergii (Sch.-Bip.) Fern. | Asteraceae | Great indian plantain | native | |
| Calystegia sepium (L.) R. Br. | Convolvulaceae | Bindweed | native | Usually in moist open alluvial soil. |
| Calystegia spithamaea (L.) Pursh | Convolvulaceae | Low bindweed | native | Sandy soil of prairie/savanna area. Very common locally. |
| Campanula americana L. | Campanulaceae | Tall bellflower | native | |
| Campanula rotundifolia L. | Campanulaceae | Harebell | native | Crevices and tops of steep stone bluffs, also exposed rock in prairie/savanna area. |
| Cannabis sativa L. | Moraceae | Hemp, Marijuana | Eurasia | Uncommon, areas of disturbance. |
| Cardamine penslyvanica Muhl. ex Willd. | Brassicaceae | Bitter cress | native | Riparian. |
| Carduus nutans L. | Asteraceae | Musk thistle | Europe | |
| Carpinus caroliniana Walter | Betulaceae | Blue beech | native | Infrequent to locally common. |
| Carya cordiformis (Wang.) K. Koch | Juglandaceae | Bitternut hickory | native | |
| Carya ovata (P. Miller) K. Koch | Juglandaceae | Shagbark hickory | native | |
| Castilleja coccinea (L.) Sprengel | Scrophulariaceae | Indian paintbrush | native | Sandy soil of prairie/savanna area. |
| Caulophyllum thalictroides (L.) Michx. | Berberidaceae | Blue cohosh | native | Rich woodland, also under electric transmission line. |
| Ceanothus americanus L. var. pitcheri T. & G. | Rhamnaceae | New Jersey tea | native | Prairie/savanna area. |
| Celtis occidentalis L. | Ulmaceae | Hackberry | native | |
| Cerastium nutans Raf. | Caryophyllaceae | Nodding chickweed | native | Exposed hilltops and alluvial valleys. |
| Chaerophyllum procumbens (L.) Crantz | Apiaceae | Chervil | native | Occasional to abundant especially on alluvial soil. |
| Chenopodium album L. | Chenopodiaceae | Lamb's quarters | Eurasia | Rock bluffs, sandy soil. |
| Chenopodium hybridum L. | Chenopodiaceae | Maple-leaved goosefoot | native | Open areas under electric transmission lines. |
| Circaea lutetiana L. ssp. canadensis (L.) Ascherson & Magnus | Onagraceae | Enchanter's nightshade | native | |
| Cirsium altissimum (L.) Sprengel | Asteraceae | Tall thistle | native | Open ground under electric transmission lines. |
| Cirsium arvense (L.) Scop. | Asteraceae | Canada thistle | Eurasia | Open ground under electric transmission lines. |
| Cirsium discolor Muhl. ex Willd. | Asteraceae | Field thistle | native | Open ground under electric transmission lines, old field. |
| Cirsium vulgare (Savi) Tenore | Asteraceae | Bull thistle | Eurasia | Open ground under electric transmission lines. |
| Claytonia virginica L. | Portulacaceae | Spring Beauty | native | |
| Clematis virginiana L. | Ranunculaceae | Virgin's bower | native | |
| Conza canadensis (L.) Cronq. | Asteraceae | Horseweed | native | |
| Cornus alternifolia L. f. | Cornaceae | Alternate-leaved dogwood | native | |
| Cornus drummondii C.A. Meyer | Cornaceae | Rough-leaved dogwood | native | Alluvial ground along stream. |
| Cornus foemina P. Miller ssp. racemosa (Lam.) J.S. Wilson | Cornaceae | Gray dogwood | native | Woodland edges. |
| Corylus americana Walter | Betulaceae | Hazelnut | native | |
| Crataegus crus-galli L. | Rosaceae | Cockspur hawthorn | native | Alluvial woodland |
| Crataegus margaretta Ashe | Rosaceae | Hawthorne | native | Upland woods. |
| Crataegus punctata Jacq. | Rosaceae | Hawthorn | native | Foodplain, and edges of woods. |
| Crataegus succulenta Schrader ex Link | Rosaceae | Hawthorn | native | Floodplain |
| Cryptotaenia canadensis (L.) DC. | Apiaceae | Honewort | native | |
| Cuscuta cuspidata Engelm. | Convolvulaceae | Dodder | native | Alluvial woods, growing on Aster ontarionis. |
| Cuscuta gronovii Willd. | Convolvulaceae | Common dodder | native | Alluvial woods, growing on Laportea canadensis. |
| Cuscuta indecora Choisy | Convolvulaceae | Dodder | native | Listed as special concern by Iowa DNR. Sandy soil on high river terrace. Growing on Solidago, Ambrosia trifida, etc. |
| Daucus carota L. | Apiaceae | Queen Anne's lace | Eurasia | Rare. |
| Dentatia laciniata Muhl. ex Willd. | Brassicaceae | Toothwort | native | |
| Desmodium canadense (L.) DC. | Fabaceae | Showy tick-trefoil | native | |
| Desmodium glutinosum (Muhl. ex Willd.) Wood | Fabaceae | Pointed tick-trefoil | native | |
| Dianthus armeria L. | Caryophyllaceae | Deptford pink | Europe | Open areas in sandy soil. |
| Dicentra canadensis (Goldie) Walp. | Papaveraceae | Squirrel corn | native | Northern oriented slopes, under rock outcrops in rich, moist soil. |
| Dicentra cucullaria (L.) Bernh. | Papaveraceae | Dutchman's breeches | native | |
| Dirca palustris L. | Thymelaeaceae | Leatherwood | native | Small, scattered groves at the base of bluffs |
| Dodecatheon meadia L. | Primulaceae | Shooting star | native | Prairie relict, small population. Also on disturbed eastern oriented bluff. |
| Echinocystis lobata (Michx.) T. & G. | Cucurbitaceae | Wild cucumber | native | Open areas under electric transmission lines and riparian. |
| Elaeagnus umbellata Thunb. | Elaeagnaceae | Autumn olive | e. Asia | Sandy open soil under power lines, bluff tops, woodland edges; infrequent. |
| Ellisia nyctelea L. | Hydrophyllaceae | Wild tomato | native | |
| Erechtites hieracifolia (L.) Raf. ex DC. | Asteraceae | Fireweed | native | Under power lines. |
| Erigeron philadelphicus L. | Asteraceae | Fleabane | native | Riparian. |
| Erigeron pulchellus Michx. | Asteraceae | Robin's plantain | native | Open, southern-oriented bluff, prairie/savanna area. Also pastured bluff. |
| Erigeron strigosus Muhl. ex Willd. | Asteraceae | Daisy fleabane | native | Openings |
| Euonymus atropurpureus Jacq. | Celastraceae | Wahoo | native | Upland woods and bluffs, likely more widespread than noted. |
| Eupatorium altissimum L. | Asteraceae | Tall thoroughwort | native | Sandy soil in clearing under power lines. |
| Eupatorium purpureum L. | Asteraceae | Purple joe-pye-weed | native | |
| Eupatorium rugosum Houtt. | Asteraceae | White snakeroot | native | |
| Euphorbia corollata Engelm. | Euphorbiaceae | Flowering spurge | native | Sandy open ground, Prairie relict. |
| Euphorbia cyathophora Murray | Euphorbiaceae | Wild poinsettia | native | Sandy openings and river banks. |
| Euphorbia hexagona Nutt. ex Sprengel | Euphorbiaceae | Six-angled spurge | native | Sandy river banks. |
| Euphorbia maculata L. | Euphorbiaceae | spotted spurge | native | Sandy soil, river banks. |
| Fragaria virginiana Duchesne | Rosaceae | Wild strawberry | native | Sandy opening in woods and prairie/savanna area. |
| Fraxinus americana L. | Oleaceae | White ash | native | Uplands. |
| Fraxinus nigra Marsh. | Oleaceae | Black ash | native | Base and lower slopes of bluffs. |
| Fraxinus pennsyvanica Marsh. var. lanceolata (Borkh.) Sarg. | Oleaceae | Green ash | native | Floodplain. |
| Galinsoga quadriradiata Ruiz & Pavon | Asteraceae | Quickweed | C&S. Amer. | Extremely disturbed soil. |
| Galium aparine L. | Rubiaceae | Cleavers | native | |
| Galium boreale L. | Rubiaceae | Northern bedstraw | native | Rocky bluffs. |
| Galium circaezans Michx. | Rubiaceae | Wild licorice | native | Bluff tops, infrequent. |
| Galium concinnum T. & G. | Rubiaceae | Shining bedstraw | native | |
| Galium triflorum Michx. | Rubiaceae | Sweet-scented bedstraw | native | |
| Geranium carolinianum L. | Geraniaceae | Cranesbill | native | Sandy pastured open areas. |
| Geranium maculatum L. | Geraniaceae | Wild geranium | native | |
| Geum canadense Jacq. | Rosaceae | White avens | native | |
| Geum vernum (Raf.) T. & G. | Rosaceae | Spring avens | native | Locally quite common in pastured floodplain woodland. Currently listed as special concern by Iowa DNR. |
| Glechoma hederacea L. | Lamiaceae | Creeping Charlie | Eurasia | Areas of disturbance, riparian. |
| Gleditsia triacanthos L. | Fabaceae | Honey locust | native | |
| Gnaphalium obtusifolium L. | Asteraceae | Everlasting | native | Sandy openings. |
| Hackelia deflexa (Wahl.) Opiz | Boraginaceae | Stickseed | native | |
| Helenium autumnale L. | Asteraceae | Sneezeweed | native | Riparian. |
| Helianthus giganteus L. | Asteraceae | Tall sunflower | native | Woodland edges. |
| Helianthus grosseserratus Martens | Asteraceae | Sawtooth sunflower | native | Sandy, alluvial opening. |
| Helianthus strumosus L. | Asteraceae | Pale-leaved sunflower | native | Woodland edges. |
| Heliopsis helianthoides (L.) Sweet | Asteraceae | Ox-eye, false sunflower | native | Prairie/savanna, openings in woodland. |
| Hepatica nobilis P. Miller var. acuta (Pursh) Steyerm. | Ranunculaceae | Hepatica | native | |
| Hesperis matronalis L. | Brassicaceae | Dame's rocket | Eurasia | Quite frequent on edges of flood plain and some moist alluvial openings where it has established itself quite nicely.. |
| Heuchera richardsonii R. Br. | Saxifragaceae | Alumroot | native | Open, southern-oriented bluff, prairie/savanna area. |
| Hydrophyllum appendiculatum Michx. | Hydrophyllaceae | Appendaged waterleaf | native | Northern oriented slopes, under rock outcrops in rich, moist soil. |
| Hydrophyllum virginianum L. | Hydrophyllaceae | Virginia waterleaf | native | |
| Hypericum punctatum Lam. | Hypericaceae | Spotted St. John's wort | native | Edges of upland woods. |
| Hypericum pyramidatum Aiton | Hypericaceae | Giant St. John's wort | native | Plants noted in pasture next to woodland, and other open areas. |
| Impatiens capensis Meerb. | Balsaminaceae | Jewelweed | native | Riparian. |
| Impatiens pallida Nutt. | Balsaminaceae | Yellow jewel weed | native | |
| Isopyrum biternatum (Raf.) T. & G. | Ranunculaceae | False rue anemone | native | Carpeting the lower slopes of the bluffs almost exclusively, down to the floodplains. |
| Juglans cinerea L. | Juglandaceae | Butternut | native | |
| Juglans nigra L. | Juglandaceae | Black walnut | native | |
| Krigia biflora (Walter) Blake | Asteraceae | False dandelion | native | Open, southern-oriented bluff, prairie/savanna area. |
| Lactuca biennis (Moench) Fern. | Asteraceae | Tall blue lettuce | native | Rare in this part of state, specimen should have been secured. |
| Lactuca canadensis L. | Asteraceae | Tall lettuce | native | Clearings. |
| Lactuca floridana (L.) Gaertner | Asteraceae | Blue lettuce | native | Woodland edges. |
| Laportea canadensis (L.) Wedd. | Urticaceae | Wood nettle | native | On rich slopes and alluvium, this species is hard to ignore when it contacts bare skin. |
| Leonurus cardiaca L. | Lamiaceae | Motherwort | Asia | Disturbed rocky areas, etal. |
| Lepidium campestre (L.) R. Br. | Brassicaceae | Field cress | Europe | Sandy pastured areas. |
| Lepidium virginicum L. | Brassicaceae | Poor-man's pepper | native | Along river bank. Sandy openings. |
| Lespedeza capitata Michx. | Fabaceae | Round-headed bush clover | native | Sandy pastures and prairie/savanna area. |
| Lindernia dubia (L.) Pennell | Scrophulariaceae | False pimpernel | native | Mud flats and sand bars, riparian. |
| Lithospermum caroliniense (Walter) MacM. | Boraginaceae | Hairy puccoon | native | Sandy, open pastures. |
| Lobelia inflata L. | Campanulaceae | Indian tobacco | native | Open ground under electric transmission lines. |
| Lobelia siphilitica L. | Campanulaceae | Great lobelia | native | Open ground under electric transmission lines. |
| Lobelia spicata Lam. | Campanulaceae | Pale-spike lobelia | native | Sandy pastures and prairie/savanna area. |
| Lonicera dioca L. var.glabrescens (Rydb.) Butters | Caprifoliaceae | Wild honeysuckle | native | |
| Lonicera morrowii Gray | Caprifoliaceae | Morrow's honeysuckle | Japan | Edge of pastured woodland. |
| Lonicera prolifera (Kirchner) Rehder | Caprifoliaceae | Wild honeysuckle | native | |
| Lonicera tatarica L. | Caprifoliaceae | Tararica honeysuckle | Eurasia | This introduction is not as rampant here, as it sometimes is elsewhere. |
| Lotus corniculatus L. | Fabaceae | Bird's-foot trefoil | Europe | Disturbed openings, pastures. |
| Lycopus americanus Muhl. ex Barton | Lamiaceae | Water horehound | native | Riparian. |
| Lycopus virginicus L. | Lamiaceae | Water horehound | native | Sandbars. |
| Lysimachia nummularia L. | Primulaceae | Moneywort | Europe | Alluvial woodland. |
| Melilotus officinalis (L.) Pallas | Fabaceae | Yellow sweet clover | Eurasia | Disturbed soil of river bank. |
| Menispermum canadense L. | Menispermaceae | Moonseed | native | |
| Mentha arvensis L. | Lamiaceae | Wild mint | native | Riparian. |
| Mimulus ringens L. | Scrophulariaceae | Monkey flower | native | Riparian. |
| Mirabilis nyctaginea (Michx.) MacM. | Nyctaginaceae | Wild four-o'clock | native | Open, disturbed sandy areas. |
| Mitella diphylla L. | Saxifragaceae | Bishop's cap | native | Common on the larger rock bluffs |
| Mollugo verticillata L. | Aizoaceae | Carpet weed | Trop. Amer. | Moist, disturbed sand. |
| Monarda fistulosa L. | Lamiaceae | Wild bergamot | native | Sandy opening in woods, pastured areas. |
| Monarda punctata L. | Lamiaceae | Spotted horsemint | native | Sandy open area. |
| Monotropa uniflora L. | Ericaceae | Indian pipe | native | Rich upland woods. |
| Morus alba L. | Moraceae | White mulberry | e. Asia | |
| Myosoton aquaticum Moench | Caryophyllaceae | Giant chickweed | Europe | |
| Oenothera laciniata Hill | Onagraceae | Cut-leaf evening-primrose | native | Disturbed sandy soil. |
| Oenothera villosa Thunb. | Onagraceae | Gray evening primrose | native | Riparian. |
| Onosmodium molle Michx. | Boraginaceae | False gromwell | native | Prairie/savanna area, rare. |
| Osmorhiza claytonii (Michx.) C.B. Clarke | Apiaceae | Sweet cicely | native | |
| Osmorhiza longistylis (Torrey) DC. | Apiaceae | Anise root | native | |
| Ostrya virginiana (P. Miller) K. Koch | Betulaceae | Ironwood | native | |
| Oxalis dillenii L. | Oxalidaceae | Yellow wood sorrel | native | Sandy, open soil. |
| Oxalis violacea L. | Oxalidaceae | Violet wood sorrel | native | Southern oriented bluffs. |
| Panax quinquefolia L. | Araliaceae | Ginseng | native | Infrequent, rich soil below northern oriented bluffs. |
| Parthenocissus quinquefolia (L.) Planchon | Vitaceae | Virginia creeper | native | |
| Parthenocissus vitacea (Knerr) A.S. Hitchc. | Vitaceae | Woodbine | native | |
| Phlox divaricata L. | Polemoniaceae | Sweet William, Blue phlox | native | |
| Phryma leptostachya L. | Phrymaceae | Lopseed | native | |
| Physalis heterophylla Nees | Solanaceae | Clammy ground cherry | native | Sandy, deserted agr. ground. |
| Physostegia parviflora Nutt. ex Gray | Lamiaceae | False dragonhead | native | Riparian. |
| Phytolacca americana L. | Phytolaccaceae | Pokeweed | native | |
| Pilea pumila (L.) Gray | Urticaceae | Clearweed | native | |
| Plantago lanceolata L. | Plantaginaceae | Buckhorn or English plantain | Eurasia | Disturbed sandy soil. |
| Plantago rugelii Dcne. | Plantaginaceae | Common plantain | native | |
| Platanus occidentalis L. | Platanaceae | Sycamore | native | |
| Podophyllum peltatum L. | Berberidaceae | Mayapple | native | |
| Polanisia dodecandra (L.) DC. | Capparaceae | Clammy-weed | native | Disturbed sandy soil. |
| Polemonium reptans L. | Polemoniaceae | Jacob's ladder | native | |
| Polygala senega L. | Polygalaceae | Seneca snakeroot | native | Thin soil on southern oriented bluffs, prairie/savanna area. |
| Polygonum achoreum Blake | Polygonaceae | Knotweed | native | Disturbed sandy soil. |
| Polygonum erectum L. | Polygonaceae | Knotweed | native | Disturbed soil. |
| Polygonum hydropiper L. | Polygonaceae | Common smartweed | native | Woodland. |
| Polygonum hydropiperoides Michx. | Polygonaceae | Wild water pepper | native | |
| Polygonum lapathifolium L. | Polygonaceae | Dock-leaved smartweed | native | Riparian. |
| Polygonum persicaria L. | Polygonaceae | Lady's thumb | Europe | Along river bank. |
| Polygonum punctatum Ell. | Polygonaceae | Water-smartweed | native | |
| Polygonum scandens L. | Polygonaceae | False buckwheat | native | Woodland edges. |
| Polygonum virginianum L. | Polygonaceae | Jumpseed | native | |
| Populus deltoides Bartram ex Marsh. | Salicaceae | Cottonwood | native | Alluvial floodplain. |
| Populus grandidentata Michx. | Salicaceae | Big-tooth aspen | native | Wooded slope by prairie/savanna. |
| Populus tremuloides Michx. | Salicaceae | Quaking aspen | native | Upland woods edge. |
| Potentilla norvegica L. | Rosaceae | Strawberry weed |
Eurasia/ native |
Opening under powerlines. |
| Potentilla recta L. | Rosaceae | Sulfur cinquefoil | Europe | Sandy opening, disturbed. |
| Potentilla simplex Michx. | Rosaceae | Common cinquefoil | native | Sandy pastured areas and prairie/savanna area. |
| Prunella vulgaris L. var. lanceolata (Bartram) Fern. | Lamiaceae | Self heal | native | Sandy opening in woods, pastured areas. |
| Prunus americana Marsh. | Rosaceae | Wild plum | native | River banks and edges of woodland. |
| Prunus pensyvanica L. f. | Rosaceae | Pin-cherry | native | Rocky bluffs. |
| Prunus serotina Ehrh. | Rosaceae | Wild black cherry | native | |
| Prunus virginiana L. | Rosaceae | Choke cherry | native | |
| Pycnanthemum virginianum (L.) Dur. & Jackson | Lamiaceae | Mountain mint | native | Woodland openings. |
| Pyrola elliptica Nutt. | Ericaceae | Shinleaf | native | North orientation on wooded ravine by prairie/savanna. |
| Quercus alba L. | Fagaceae | White oak | native | |
| Quercus bicolor Willd. | Fagaceae | Swamp white oak | native | Floodplain. |
| Quercus borealis Michx. f. var. maxima (Marsh.) Ashe [=Quercus rubra L.] | Fagaceae | Northern red oak | native | |
| Quercus ellipsoidalis E.J. Hill | Fagaceae | Hill's oak | native | |
| Quercus macrocarpa Michx. | Fagaceae | Bur oak | native | Uplands. |
| Quercus muhlenbergii Engelm. | Fagaceae | Chinquapin or chestnut oak | native | On upper portion of bluffs with southern exposure. |
| Quercus velutina Lam. | Fagaceae | Black oak | native | Uplands. |
| Ranunculus abortivus L. | Ranunculaceae | Small-flowered crowfoot | native | |
| Ranunculus longirostris Godron | Ranunculaceae | White water crowfoot | native | Sandbar and bank of river. |
| Ranunculus recurvatus Poiret | Ranunculaceae | Hooked buttercup | native | Bluff tops, rich woodland. |
| Ranunculus sceleratus L. | Ranunculaceae | Cursed crowfoot | native | Riparian. |
| Ranunculus septentrionalis Poiret | Ranunculaceae | Swamp buttercup | native | |
| Ratibida pinnata (Vent.) Barnh. | Asteraceae | Gray-headed coneflower | native | Prairie/savanna, Prairie relict. |
| Rhus glabra L. | Anacardiaceae | Smooth sumac | native | Thickets in prairie/savanna area. |
| Rhus typhina L. | Anacardiaceae | Staghorn sumac | native | Sandy clearings along river under power lines. |
| Ribes cynosbati L. | Saxifragaceae | Prickly gooseberry | native | On rock outcrops. |
| Ribes missouriensis Nutt. ex T. & G. | Saxifragaceae | Gooseberry | native | |
| Rorippa palustris (L.) Besser | Brassicaceae | Yellow cress | native | Intermittent wet areas. |
| Rosa muliflora Thunb. ex Murray | Rosaceae | Multiflora rose | e. Asia | |
| Rubus allegheniensis Porter ex Bailey | Rosaceae | Blackberry | native | Open ground under electric transmission lines. |
| Rubus idaeus L. var. strigosus (Michx.) Maxim. | Rosaceae | Wild red raspberry | native | Open ground under electric transmission lines. |
| Rubus occidentalis L. | Rosaceae | Black raspberry | native | |
| Rubus steelei L.H. Bailey | Rosaceae | Dewberry | native | Rocky prairie remnant, prairie/savanna area. |
| Rudbeckia hirta L. | Asteraceae | Black-eyed Susan | native | Pastured openings in woodland, and prairie/savanna area. |
| Rudbeckia laciniata L. | Asteraceae | Tall coneflower | native | Alluvial soil. |
| Rudbeckia triloba L. | Asteraceae | Brown-eyed Susan | native | |
| Ruellia humilis Nutt. | Acanthaceae | Wild petunia | native | Sandy open areas, not common. |
| Rumex acetosella L. | Polygonaceae | Red sorrel | Eurasia | Sandy opening in woods, sandy pastured areas. |
| Rumex crispus L. | Polygonaceae | Curly dock | Europe | Sandy pastures. |
| Rumex mexicanus Meisner | Polygonaceae | Dock | native | Open area, with prairie grasses under transmission line. |
| Salix amygdaloides Andersson | Salicaceae | Peach-leaved willow | native | |
| Salix nigra Marsh. | Salicaceae | Black willow | native | Alluvial woodland. |
| Sambucus canadensis L. | Caprifoliaceae | Elderberry | native | |
| Sanguinaria canadensis L. | Papaveraceae | Bloodroot | native | |
| Sanicula canadensis L. | Apiaceae | Black snakeroot | native | |
| Sanicula gregaria Bickn. | Apiaceae | Common snakeroot | native | |
| Saponaria officinalis L. | Caryophyllaceae | Bouncing bet | Eurasia cult. | Sandy, disturbed soil. |
| Scrophularia lanceolata Pursh | Scrophulariaceae | Figwort | native | Rare along river, and sandy pasture. |
| Scrophularia marilandica L. | Scrophulariaceae | Figwort | native | Especially common in clearing under electrical transmission lines. |
| Scutellaria lateriflora L. | Lamiaceae | Mad-dog skullcap | native | Riparian. |
| Scutellaria ovata Hill | Lamiaceae | Skullcap | native | Woodland. |
| Senecio pauperculus Michx. | Asteraceae | Prairie ragwort | native | Sandy opening in woods, former agricultural use highly probible. |
| Silene antirrhina L. | Caryophyllaceae | Sleepy catchfly | Europe | Sandy old agr. area. |
| Silene pratensis (Rafn.) Gren. & Godron [=Lychnis alba P. Miller] | Caryophyllaceae | White campion | Europe | Sandy pastured areas and openings, rock outcrops, infrequent. |
| Silphium laciniatum L. | Asteraceae | Compass plant | native | Relict prairie. |
| Silphium perfoliatum L. | Asteraceae | Cup plant | native | Alluvial soil |
| Sisymbrium altissimum L. | Brassicaceae | Tumble mustard | native | Disturbed sandy soil, undoubtably more common than noted. |
| Sisymbrium officinale (L.) Scop. | Brassicaceae | Hedge mustard | Eurasia | Opening under electric transmission lines. |
| Solanum americanum P. Miller | Solanaceae | Black nightshade | native | Disturbed soil, riparian.. |
| Solanum carolinense L. | Solanaceae | Horse nettle | native | Disturbed sandy areas. |
| Solidago canadensis L. var. canadensis | Asteraceae | Tall goldenrod | native | Openings. |
| Solidago flexicaulis L. | Asteraceae | Zig-zag goldenrod | native | Bluffs and rich woods. |
| Solidago gigantea Aiton | Asteraceae | Smooth goldenrod | native | Woodland edge. |
| Solidago ulmifolia Muhl. ex Willd. | Asteraceae | Elm-leaved goldenrod | native | |
| Sonchus oleraceus L. | Asteraceae | Common sow thistle | Europe | Opening for electric transmission lines. |
| Stachys tenuifolia Willd. var. hispida (Pursh) Fern. | Lamiaceae | Hedge nettle | native | Riparian. |
| Staphylea trifolia L. | Staphyleaceae | Bladdernut | native | Locally common, forming thickets on rocky slopes and bluffs. |
| Stellaria graminea L. | Caryophyllaceae | Common stitchwort | Europe | Quite common in floodplain pastures with no canopy, less common in woodland edge. |
| Stellaria media (L.) Vill. | Caryophyllaceae | Common chickweed | native | Areas disturbed by moving water |
| Taraxacum officinale Weber | Asteraceae | Dandelion | Eurasia | |
| Teucrium canadense L. | Lamiaceae | Germander | native | Woodland openings. |
| Thalictrum dasycarpum Fischer & Ave-Lall. | Ranunculaceae | Purple meadow-rue | native | Moist, woodland opening. |
| Thalictrum thalictroides (L.) Eames & Boivin | Ranunculaceae | Rue anemone | native | |
| Thaspium barbinode (Michx.) Nutt. | Apiaceae | Meadow parsnip | native | Somewhat riparian. |
| Thlaspi arvense L. | Brassicaceae | Field penny cress | Europe | Rare on southern oriented bluff with disturbance. |
| Tilia americana L. | Tiliaceae | Basswood | native | |
| Toxicodendron radicans (L.) Kuntze | Anacardiaceae | Poison ivy | native | It is possible that T. rydbergii also occurs at this site, but the species were not segregated. |
| Triodanis perfoliata (L.) Nieuw. | Campanulaceae | Venus' looking-glass | native | Open woods and clearings. |
| Triosteum aurantiacum Bickn. | Caprifoliaceae | Horse gentian | native | Open, southern-oriented bluff, and open woods. |
| Ulmus americana L. | Ulmaceae | American elm | native | |
| Ulmus rubra Muhl. | Ulmaceae | Slippery elm | native | |
| Urtica dioica L. | Urticaceae | Stinging nettle | native | |
| Verbascum thapsus L. | Scrophulariaceae | Common mullein | Europe | Rare on rock outcrop, and old field. |
| Verbena hastata L. | Verbenaceae | Blue Verbain | native | Alluvium. |
| Verbena stricta Vent. | Verbenaceae | Hoary Vervain | native | Sandy open soil. |
| Verbena urticifolia L. | Verbenaceae | White vervain | native | Sandy, woodland openings. |
| Veronia fasciculata Michx. | Asteraceae | Smooth ironweed | native | Sandy pasture. |
| Veronica peregrina L. | Scrophulariaceae | Speedwell | native | Sandy soil along river. |
| Veronicastrum virginicum (L.) Farw. | Scrophulariaceae | Culver's root | native | Open woods. |
| Viola pratincola Greene | Violaceae | Common blue violet | native | Woodland openings. |
| Viola pubescens Aiton | Violaceae | Yellow violet | native | |
| Viola sororia Willd. | Violaceae | Hairy blue violet | native | |
| Vitus riparia Michx. | Vitaceae | Riverbank grape | native | |
| Zanthoxylum americanum P. Miller | Rutaceae | Prickly ash | native | Forming small thickets in disturbed woods, both upland and floodplain. |
| ANGIOSPERMS: MONOCOTYLEDONS | ||||
| Agropyron repens (L.) Beauv. | Poaceae | Quackgrass |
Europe, Asia |
Sandy deserted agr. field. |
| Agrostis gigantea Roth | Poaceae | Redtop | Europe | Pastured areas. |
| Agrostis perennans (Walter) Tuckerman | Poaceae | Upland bent | native | Sandy pasture. |
| Allium burdickii (Hanes) A.G. Jones [=A. tricoccum Aiton var. burdickii Hanes] | Liliaceae | Wild leek | native | Open upland woods, usually noted at top of bluffs. |
| Allium canadense L. | Liliaceae | Wild onion | naive | |
| Andropogon gerardii Vitman | Poaceae | Big bluestem | native | Fence rows, road ditches. |
| Arisaema dracontium (L.) Schott | Araceae | Green dragon | native | |
| Arisaema triphyllum (L.) Schott | Araceae | Jack-in-the-pulpit | native | |
| Brachyelytrum erectum (Schreber) Beauv. | Poaceae | Bearded Shorthusk | native | Open woods on bluff. |
| Bromus commutatus Schrader | Poaceae | Hairy chess | Eurasia | Sandy openings on alluvial plains. |
| Bromus inermis Leysser | Poaceae | Smooth brome | Europe | Disturbed soil by river. |
| Bromus latiglumis (Shear) A.S. Hitchcock | Poaceae | Eared brome | native | |
| Bromus pubescens Muhl. ex Willd. | Poaceae | Canada brome | native | Rocky wooded areas. |
| Carex aggregata Mack. | Cyperaceae | Sedge | native | Sandy alluvial soil. Currently listed as Special Concern by the Iowa DNR. |
| Carex albursina Sheldon | Cyperaceae | White bear sedge | native | Usually on rich, northern oriented slopes. |
| Carex amphibola Steudel var. turgida Fern. [=Carex grisea Wahl.] | Cyperaceae | Sedge | native | Alluvial soil, infrequent; crevices of rich soil in rocky bluffs. |
| Carex blanda Dewey | Cyperaceae | Sedge | native | |
| Carex careyana Dewey | Cyperaceae | Carey's sedge | native | Not common, rich wooded slopes. Currently listed as Special Concern by the Iowa DNR. |
| Carex cephalophora Willd. | Cyperaceae | Capitate sedge | native | Openings, open upland woods. |
| Carex conjuncta Boott | Cyperaceae | Soft fox sedge | native | Open alluvial plain, not common. |
| Carex davisii Schwein. & Torrey | Cyperaceae | Davis's sedge | native | |
| Carex eburnea Boott | Cyperaceae | Sedge | native | Thin soil on crest of rocky bluffs. |
| Carex gravida Bailey var. lunelliana Mack. | Cyperaceae | Sedge | native | |
| Carex grayi Carey | Cyperaceae | Sedge | native | Rare; alluvial woods. |
| Carex haydenii Dewey | Cyperaceae | Hayden's sedge | native | Colony along edge of river. |
| Carex hirtifolia Mack. | Cyperaceae | Hairy sedge | native | |
| Carex hitchcockiana Dewey | Cyperaceae | Sedge | native | Open ground under electric transmission lines. |
| Carex jamesii Schwein. | Cyperaceae | Grass sedge | native | Not uncommon. |
| Carex molesta Mack. | Cyperaceae | Sedge | native | Sandy open area on alluvial plain. |
| Carex muhlenbergii Schkuhr ex Willd. var. muhlenbergii | Cyperaceae | Muhlenberg's sedge | native | Sandy open pastured areas. |
| Carex normalis Mack. | Cyperaceae | Sedge | native | Floodplain, broken canopy. |
| Carex oligocarpa Willd. | Cyperaceae | Sparse-fruited sedge | native | Common woodland species. |
| Carex pedunculata Muhl. ex Willd | Cyperaceae | Sedge | native | North oriented slopes, local, but forming large colonies which can account for half the plant cover in a given area. |
| Carex pensylvanica Lam. | Cyperaceae | Pennsylvania or oak sedge | native | Top of southern oriented bluff, under broken canopy. Open woodland. |
| Carex retroflexa Muhl. ex Willd. | Cyperaceae | Sedge | native | Quite common in sandy open areas such as pastures and prairie/savanna area. Possibly, this is only the second documentation of this species in Iowa, the other being in Johnson Co. This plant may be reaching its northern limits here. Special Concern. |
| Carex rosea Schkuhr. ex. Willd. [=Carex convoluta Mack.] | Cyperaceae | Sedge | native | The taxonomy of this group is confusing. This should be the right treatment. |
| Carex siccata Dewey [=Carex foenea Willd.] | Cyperaceae | Sedge | native | This is possibly only the second documentation of this species in Iowa, previously known from a prairie in Clay County in 1936. At this site it occurs in a sandy opening in the woods, and in the prairie/savanna area. Special Concern by the Iowa DNR. |
| Carex sparganioides Muhl. ex Willd. | Cyperaceae | Sedge | native | |
| Carex sprengelii Dewey ex Sprengel | Cyperaceae | Long-beaked sedge | native | Infrequent on rich slopes, to abundant on sandy river terrace with canopy. |
| Carex vulpinoidea Michx. | Cyperaceae | Sedge | native | Sandy opening. |
| Cenchrus longispinus (Hackel) Fern. | Poaceae | Sandbur | native | Sandy, disturbed soil, including sandbars along river. |
| Cinna arundinacea L. | Poaceae | Wood reed | native | |
| Commelina communis L. | Commelinaceae | Common dayflower | e. Asia | Sandy river banks. |
| Corallorhiza odontorhiza (Willd.) Nutt. | Orchidaceae | Fall coral-root orchid | native | Upland woods with Triphora trianthophora. |
| Cyperus aristatus Rottb. | Cyperaceae | Awned Flat Sedge | native | Riparian, on sandbars. |
| Cyperus filiculmis Vahl. | Cyperaceae | Flat Sedge | native | Sandy opening. |
| Cyperus schweinitzii Torrey | Cyperaceae | Sand Flat Sedge | native | Sandy open soil under power lines. |
| Cyperus strigosus L. | Cyperaceae | Straw-color Flat Sedge | native | Sandy soil. |
| Dactylis glomerata L. | Poaceae | Orchard grass | Europe | Disturbed areas. |
| Danthonia spicata (L.) Beauv. ex R. & S. | Poaceae | Poverty oat grass | native | Prairie/savanna area. |
| Diarrhena americana Beauv. var. obovata Gl. | Poaceae | American beakgrain | native | Quite common in alluvial woods, occasionally in almost solid stands covering relatively large areas, also common in association with Carex sprengelii. |
| Dichanthelium acuminatum (Sw.) Gould & Clark var. acuminatum | Poaceae | Panic grass | native | Deserted sandy field, and top of southern oriented bluffs. |
| Dichanthelium acuminatum (Sw.) Gould & Clark var. implicatum (Scribner) Gould & Clark | Poaceae | Panic grass | native | Prairie/savanna area, transmission lines, etc. |
| Dichanthelium latifolium (L.) Gould & Clark | Poaceae | Broad-leaved panic grass | native | Open woods and edges. |
| Dichanthelium oligosanthes (Schultes) Gould var. scribnerianum (Nash.) Gould | Poaceae | Scribner's panic grass | native | Open, sandy area under power lines. |
| Digitaria sanguinalis (L.) Scop. | Poaceae | Common crabgrass | Europe | Disturbed soil. |
| Dioscorea villosa L. | Dioscoreaceae | Wild yam | native | |
| Echinochloa crusgalli (L.) Beauv. | Poaceae | Barnyard grass | Eurasia | Disturbed river banks. |
| Echinochloa muricata (Beauv.) Fern. var. muricata | Poaceae | Barnyard grass | native | Riparian. |
| Eleusine indica (L.) Gaertner | Poaceae | Goose grass | Old world: Africa? | Disturbed sandy soil. |
| Elymus canadensis L. | Poaceae | Canada wildrye | native | High line opening, not common. |
| Elymus riparius Wieg. | Poaceae | River bank wild rye | native | Riparian, growing with Elymus wiegandii. |
| Elymus villosus Muhl. ex Willd. | Poaceae | Silky wild rye | native | |
| Elymus virginicus L. | Poaceae | Virginia wild rye | native | |
| Elymus wiegandii Fern. | Poaceae | Broad-leaved wild rye | native | Riparian, growing with Elymus riparius. Also growing on top of of large dislodged bedrock, in pockets of rich soil; steep valley. |
| Eragrostis frankii C.A. Meyer var. brevipes Fassett | Poaceae | Sandbar love grass | native | Sand bars and mud flats. |
| Eragrostis hypernoides (Lam.) BSP. | Poaceae | Creeping love grass | native | Sand bars and mud flats |
| Eragrostis pectinacea (Michx.) Nees | Poaceae | Carolina love grass | native | Disturbed sandy soil, riparian areas. |
| Eragrostis spectabilis (Pursh) Steudel | Poaceae | Purple love grass | native | Dry, open soil. |
| Erythronium albidum Nutt. | Liliaceae | Trout-lily, dogtooth-violet | native | |
| Festuca obtusa Biehler | Poaceae | Nodding fescue | native | |
| Galearis spectabilis (L.) Raf. | Orchidaceae | Showy orchid | native | |
| Hypoxis hirsuta (L.) Cov. | Liliaceae | Yellow stargrass | native | Top of southern oriented bluffs. |
| Hystrix patula Moench [=Elymus hystrix L.] | Poaceae | Bottle-brush grass | native | |
| Juncus tenuis Willd. | Juncaceae | Pathrush | native | Sandy openings. |
| Leersia virginica Willd. | Poaceae | White grass | native | |
| Luzula multiflora (Retz.) Lej. | Juncaceae | Woodrush | native | Open woodland on southern oriented bluff, growing around trees in open soil w/ Carex pensylvanica |
| Melica nitens (Scribner) Nutt. ex Piper | Poaceae | Three-flowered melic grass | native | Sandy openings in alluvial woods. |
| Milium effusum L. | Poaceae | Millet-grass | native | Apparently documented only once in Iowa, from Allamakee county. At this preserve the grass was collected in an artificial clearing that is kept free of trees for electric power lines. Currently listed as Special Concern by the Iowa DNR. |
| Muhlenbergia frondosa (Poiret) Fern. | Poaceae | Wirestem muhly | native | Riparian |
| Muhlenbergia mexicana (L.) Trin. | Poaceae | Wirestem muhly | native | Tops of southern oriented bluffs. |
| Muhlenbergia schreberi J.F. Gmelin | Poaceae | Nimblewill | native | Bluff tops, and dry open soil. |
| Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. | Poaceae | Rock muhly | native | Southern oriented bluff tops. |
| Muhlenbergia sylvatica (Torrey) Torrey ex Gray | Poaceae | Forest muhly | native | Open woods. |
| Oryzopsis racemosa (Smith) Ricker | Poaceae | Black seeded rice-grass | natve | Rich soiled slopes and bluffs of any orientation. |
| Panicum capillare L. | Poaceae | Common witchgrass | native | Disturbed soil, sometimes riparian. |
| Panicum dichotomiflorum Michx. | Poaceae | Fall panic grass | native | Sandy river banks. |
| Panicum virgatum L. | Poaceae | Switchgrass | native | Sandy openings under electrical transmission lines. |
| Paspalum setaceum Michx. var. muhlenbergii (Nash) D. Banks | Poaceae | Bead-grass | native | Sandy open soil. |
| Phalaris arundinacea L. | Poaceae | Reed canary grass | native | Sometimes quite abundant on floodplain. |
| Phleum pratense L. | Poaceae | Timothy | Europe | Disturbed areas, pastures. |
| Poa pratensis L. | Poaceae | Kentucky bluegrass | Europe | Sandy opening in woods, and pastured areas. |
| Poa sylvestris Gray | Poaceae | Woodland bluegrass | native | Rich wooded slopes. |
| Polygonatum biflorum (Walter) Ell. | Liliaceae | Solomon's seal | native | |
| Potamogeton nodosus Poiret | Potamogetonaceae | Pondweed | native | Farm impoundment. |
| Schizachne purpurascens (Torrey) Swallen | Poaceae | False medic | native | Not common; in pockets of soil on rock outcrops. |
| Setaria glauca (L.) Beauv. | Poaceae | Yellow foxtail | Europe | Disturbed soil, riparian at times. |
| Sisyrinchium campestre Bickn. | Iridaceae | Blue-eyed grass | native | Top of southern oriented bluffs, prairie/savanna area. |
| Smilacina racemosa (L.) Desf. | Liliaceae | False Solomon's seal | native | |
| Smilax ecirrhata (Engelm. ex Kunth) S. Watson | Liliaceae | Carrion flower | native | |
| Smilax herbacea L. | Liliaceae | Carrion flower | native | |
| Smilax hispida Muhl. | Liliaceae | Greenbriar | native | |
| Sorghastrum nutans (L.) Nash | Poaceae | Indian grass | native | Road ditch. |
| Sphenopholis obtusata (Michx.) Scribner var. obtusata | Poaceae | Wedge grass | native | Prairie/savanna area. |
| Sphenopholis obtusata (Michx.) Scribner var. major (Torrey) K.S. Erdman [=S. intermedia Rydb.] | Poaceae | Wedge grass | native | Open woods on bluff. |
| Tradescantia ohiensis Raf. | Commelinaceae | Spiderwort | native | Sandy, woodland openings. |
| Trillium flexipes Raf. | Liliaceae | Nodding trillium | native | Northern oriented slopes, under rock outcrops in rich, moist soil. |
| Triphora trianthophora (Sw.) Rydb. | Orchidaceae | Nodding pogonia | native | Large population under dense canopy in upland woods, few herbaceous plants, with much leave mulch. |
| Uvularia grandiflora Small | Liliaceae | Bellwort | native | |
| Zigadenus glaucus Nutt. | Liliaceae | White camass | native | Crevices and tops of steep stone bluffs, northern orientation. |
TOTAL:
448 species
|
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Last Updated: 04/08/2002