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Most Popular Papers *

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Geology of Iowa Fens
C. A. Thompson, E. A. Bettis III, and R. G. Baker

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Myxomycetes of Big Bend National Park, Texas
Lois H. Tiffany and George Knaphus

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The Mating Systems and Pollination Biology of Three Species of Verbena (Verbenaceae)
Robert W. Cruden, Kristina K. Baker, Thomas E. Cullinan, Karen A. Disbrow, Kelly L. Douglas, John D. Erb, Kenneth J. Kirsten, Mary L. Malik, Elizabeth A. Turner, Jonathon A. Weier, and Sherry R. Wilmot

* Based on the average number of full-text downloads per day since the paper was posted.
» Updated as of 07/10/17.