Iowa Lichens: An Annotated Listing

The previous listings of Iowa lichens were compiled in the l890\u27s and early 1900\u27s and represented collections primarily from three Iowa counties. In the intervening years, several listings of local lichens have been published. The lichen flora of Iowa as presented here consists of 74 genera with 263 species and is a compilation of previously reported species, of herbarium specimens, and of observations made by the authors. A notation of habitat follows each entry in addition to the general listing of lichens found in similar habits summarized in the discussion

Notes on the Flora of Northeastern Iowa

The following notes are the result of a series of studies made during the summer of 1895 when the writer passed down the Upper Iowa River from Decorah to its mouth and thence down the Mississippi River to Muscatine, examining en route the floras of Winneshiek, Allamakee, Clayton, Dubuque, Jackson, Clinton and Scott Counties. Much field work was done by collecting specimens and taking notes. The writer received aid subsequently in the examination of a collection from Winneshiek County made by Herbert Goddard of Decorah, Iowa. All the rare or infrequent species mentioned in the following list are represented in my herbarium. Those common as Quercus alba, Ulmus americana, Populus monilifera, Xanthium canadense, etc., are not represented by specimens from all the localities given

Rare Iowa Plant Notes from the R. V. Drexler Herbarium

Notes on the distribution, habitats, associated species, and taxonomic considerations for 134 rare Iowa plants are presented. These taxa, including 15 Pteridophytes, 74 Dicots, and 45 Monocots were located during a decade of field research (1979-1989) concentrated in eastern, northeastern, and northwestern Iowa. Included among these are 10 taxa previously unrecorded from the Iowa flora (Carex sterilis, Circaea X intermedia, Cypripedium calceolus var. parviflorum, Lycopodium inundatum, Opuntia macrorhiza, Salix candida X Salix rigida, Salix X clarkei, Solidago uliginosa, Spiranthes ova/is, Viola adunca), and 15 taxa (Angelica atropurpurea, Aristolochia serpentaria, Artemesia frigida, Aster linariifolius, Berula pusilla, Carex conoidea, Eleocharis pauciflora var. fernaldii, Erythronium americanum, Galium labradoricum, Hypericum gentainoides, Juncus marginatus, Potentilla pensylvanica, Salix candida, Viola renifolia, and Xyris torta) which were once feared extirpated from the state (based on Roosa and Eilers 1978, Howe et al. 1984). The remainder of the species discussed are rare in Iowa or are restricted to special habitats within the state, including algific talus slopes, fens, and vernal pools

One Hundred Iowa Mosses

The mosses of Iowa are far from being adequately known. There are two large collections in which many packets are still unidentified. Outside of the State the Iowa mosses are very scantily represented even in the largest herbaria. It is proposed to distribute ten sets of the mosses and liverworts of the State, in order to place on record, and make available, the species and localities. Following is a list of one hundred Musci that are now ready for distribution. Although there are over 200 species of Musci in Iowa, it is doubtful whether another hundred will ever be distributed in sets. Many of them are known in very small quantity and from only one station. There is not enough in the State to make ten sets! For such species, specialists can doubtless get fragments from their resting places in the herbaria of the State University, Grinnell College, or Iowa Wesleyan College. It is urgently recommended that all additions to the moss flora of the State be placed on record by depositing a specimen in one of the active moss herbaria: at Grinnell College or at the State University

The Family Boraginaceae in Iowa - A Preliminary Report

Except for the annotated list published by Cratty in The Iowa Flora (1933), there has been no publication dealing with the entire family Boraginaceae in Iowa. · On the basis of only the Iowa State College herbarium, Cratty listed thirteen species of the family known to occur in the state; three of these were indicated as introductions from Europe or Asia. Prior to the appearance of Cratty\u27s list, certain species of the family had been included in local and county lists,1 and in Cratty\u27s paper on the immigrant flora of Iowa ( 1929), while Conard and Clarke ( 1929) had discussed the differentiation of Lithospermum canescense and L. gmelini (the L. croceum of the present paper). Four species, not listed by Cratty ( 1933), had been reported for the state prior to the publication of The Iowa Flora; these are: (a) Hackelia americana (A. Gray) Fern., reported by Arthur (1878) as Echinospermum deflexum and by Somes (1913) as Lappula deflexa var. americana; (b) Lithospermum arvense L., reported by Arthur ( 1884), Halstead ( 1888), Barnes, Reppert and Miller ( 1901), Greene ( 1907), and more recently by Goodman ( 1940) and Augustine (1941); (c) Lithospermum officinale L., reported by Fink (1897); and (d) Symphytum officinale L., reported by Diehl (1916) and Hagge (1929). Cratty (1934), in a second paper on the immigrant flora of Iowa, added Borago officinalis L. to the state list. Six other species have been reported for Iowa, but we have been unable to find specimens of them; they are placed, therefore, in the list of Excluded Species on page 147 of the present paper

The Pteridophyte Flora of Iowa

A floristic study of Iowa pteridophytes is presented based upon extensive herbarium and field work. Historical notes are included on the principal collectors, along with a summary of the accumulation of floristic records. Taxonomic notes are presented on seven taxa new to the state and on six excluded taxa. A flora of 57 species and 3 hybrids is recognized. Floristic notes are presented on the status of the state flora and county floras. The addition of 402 new county records increases the total of county occurrences by 47%. Statements of habitat and distribution are presented with dot maps for the entire flora. Records requiring new collections are identified, along with counties needing further field study and species that require special attention

The Scrophulariaceae of Iowa

The Figwort family comprises nearly 2,500 species, which are grouped in about 165 genera. The species are quite widely distributed, but are most abundant in temperate regions, occurring rarely towards the poles and equator. Heller, in his Catalogue of North American Plants, includes 51 genera and 627 species and varieties belonging to the Figwort family. The flora of Iowa has representatives of 21 genera, there being about 45 species

The Liliales of Iowa

The order Liliales consists of monocotyledonous plants, having for the most part regular and complete flowers, the perianth being well developed and made up of three or six parts. Ovary compound, superior or inferior