Five Pteridophytes New to Iowa

Abstract

We report an additional five taxa to the Iowa flora based on new field collections or on re-examination of problematic specimens. With these additions, the Iowa pteridophyte flora now consists of 70 taxa, a surprisingly high total for a state originally about 85% prairie and now predominantly in intensive row-crop agriculture.Botrychium campestre W. Wagner & Farrar, Prairie Moonwort, is a North American endemic that occurs sporadically in the Great Plains of Canada and the United States. The Iowa plants were originally discovered growing in loess soils 0n i X n o r o C ^ eeP hUl PrairieS in WeStern Iowa ( pl y m °uth Co.) by Ted Van Bruggen in 1982. They were recognized as plants new to Iowa by Lawrence Eilers, studied by Donald Farrar (Proc. Iowa Acad. Sci., 1985), Florence Wagner, and Warren â"¢T* T i} T â"¢i de ^?" \t species (wagner & wa §ner ' Amer -Fern *• 76. [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47] 1986). The Prairie Moonwort is encountered from late-April to mid-June when soil and climate conditions am mnrWatoH n {* â"¢â€ž, i „„. t b conditions are moderated. It is now known from counties in extreme western Iowa (Fremont Co.