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Authors

E. D. Ball

Document Type

Research

Abstract

The present paper has been planned to serve a double purpose. Its first object being to furnish a means of separating and determining the members of this family found in the United States and Canada, together with their varieties and the synonomy as far as it has been worked out. Secondly, to give sufficiently accurate and detailed descriptions in all cases, even where not necessary in the separation of our own forms, so that later workers in the group and those from other parts will be able to discriminate between our species and closely allied forms from other regions, or to recognize our forms when found in other countries.

Publication Date

1900

Journal Title

Proceedings of the Iowa Academy of Sciences

Volume

8

Issue

1

First Page

35

Last Page

75

Copyright

© Copyright 1900 by the Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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