American Journal of Botany
journal article
A Pityoxylon from Yellowstone National Park
Henry S. Conard
American Journal of Botany
Vol. 17, No. 6 (Jun., 1930), pp. 547-553 (7 pages)
Published By: Wiley
American Journal of Botany
https://doi.org/10.2307/2435699
https://www.jstor.org/stable/2435699
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