Author: Van Eseltine, G.P., 1918.:
Title: The allies of Selaginella rupestris in the Southeastern United States. [Contr. U.S. Natl. Herb., 20(5).]
Description: Washington. 8vo. Pp. i-vi,159-172,vii, 8 photogr. pls., 8 composite figs. Orig. wrs., uncut.

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