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