1) The list of vascular plants has been compiled by Diana Horton, University of Iowa Herbarium, Iowa City, IA, and incorporates data from lists prepared by Paul Sorensen (1962), who recorded 266 species; additions (14 species) to Sorensen's list provided by Paul Sorensen (in litt., June 1998); by David Glenn-Lewin (1980), who reported 15 additional species; by Richard S. Rhodes (pers. comm., June 1997), who reported a further 31 species; and by Jacquie Marietta and Ken Jensen (unpublished list prepared in late June or early July 1994), who added 8 species and 1 variety. The list of mosses in Sorensen's 1962 publication is based on identifications provided by Gary L. Smith (Gary L. Smith Merrill). Voucher specimens for difficult-to-identify species and noteworthy records are in the University of Iowa Herbarium.
Literature
Cited
Glenn-Lewin, D. 1980. Report on Williams Prairie (Report No. 11, Inventory
and Management Plans for TNC Preserves in Iowa).
Sorensen, P.D. 1962. The Williams Prairie: a prairie relict in Johnson County.
Proc. Iowa Acad. Sci. 69: 45-53.
2) Latin names of vascular plants generally follow Eilers & Roosa (1994), The Vascular Plants of Iowa, and/or Gleason and Cronquist (1991), Manual of Vascular Plants of Northeastern United States and Adjacent Canada (2nd edition).
3)
Latin names of mosses generally follow Anderson, Crum & Buck (1990), List
of the mosses of North America north of Mexico (Bryologist 93: 448-499).
4) Total species recorded and percentage
of alien species are at the end of the list.
Last Updated: 04/08/2002