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Document Type

Research

Abstract

Most of the known species of waterlily (Nymphaea Sm.) are extremely variable. The student feels obliged to recognize certain extreme forms as species. These are often restricted geographically. But where their habitats are connected by continuous land areas, the intermediate country is usually populated by a series of waterlilies which grade insensibly from one extreme to the other. The commoner white waterlilies of North America illustrate these conditions.

Publication Date

1916

Journal Title

Proceedings of the Iowa Academy of Science

Volume

23

Issue

1

First Page

621

Last Page

623

Copyright

©1916 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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