Allamakee County Aora, Driftless Area Aora, Endangered Plant Species, Iowa Vascular Aora, Threatened Plant Species
Based upon field and herbarium study, the vascular flora of Allamakee County is composed of 1040 taxa (species plus hybrids), including 46 endangered and 23 threatened Iowa species. This number represents approximately 50% of the species in the state flora and is the greatest number of taxa documented for a single Iowa county. The large and diverse flora reflects the diversity of topography and habitat types within the county. The study resulted in the addition of four taxa to the state flora (Conopholis americana, Dryopteris X triploidea, Equisetum X litorale, and Polygonum douglasii) and in the location of populations of two species previously considered extirpated within the state (Dryopteris intermedia and Ilex verticillata).
Proceedings of the Iowa Academy of Science
©1980 Iowa Academy of Science, Inc.
Peck, James H.; Roosa, Dean M.; and Eilers, Lawrence J.
"A Checklist of the Vascular Flora of Allamakee County, Iowa,"
Proceedings of the Iowa Academy of Science, 87(2), 62-75.
Available at: https://scholarworks.uni.edu/pias/vol87/iss2/8