•  
  •  
 

Document Type

Research

Keywords

Endangered plant species, Iowa vascular flora, Lyon County flora, Sioux County flora, Threatened plant species

Abstract

The combined vascular flora of Lyon and Sioux counties, Iowa, based upon field and herbarium study, is composed of 612 species, of which 454 species (74%) occur in both counties. The Lyon County vascular flora consists of 561 species, including 13 state endangered, 9 state threatened species, and 102 non-native species. The Sioux County vascular flora consists of 506 species, including 2 state threatened species and 106 non-native species. The floras are most notable for the presence of plants with floristic affinities to the Great Plains to the west of Iowa. They also have a very high percentage (18%-20%) of their floras comprised of non-native species, reflecting the intensity of human activities on the landscape.

Publication Date

September 1984

Journal Title

Proceedings of the Iowa Academy of Science

Volume

91

Issue

3

First Page

92

Last Page

97

Copyright

© Copyright 1984 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

Share

COinS