The vascular flora of Pennsylvania annotated checklist and atla /s
Rhoads, Ann Fowler.
The vascular flora of Pennsylvania annotated checklist and atla /s Ann Fowler Rhoads, William McKinley Klein ; illustrations by Janet E. Klein ; compiled and produced at the Morris Arboretum of the University of Pennsylvania with the assisstance of Alfred E. Schuyler and Carl S. Keener. - Philadelphia : American Philosophical Society, 1993. - 636 p. : ill. ; 29 cm. - Memoirs series ; v. 207. .
p. 581-594.
0871692074 RM130.00
Botany--United States--Pennsylvania.
Botany--Classification.
The vascular flora of Pennsylvania annotated checklist and atla /s Ann Fowler Rhoads, William McKinley Klein ; illustrations by Janet E. Klein ; compiled and produced at the Morris Arboretum of the University of Pennsylvania with the assisstance of Alfred E. Schuyler and Carl S. Keener. - Philadelphia : American Philosophical Society, 1993. - 636 p. : ill. ; 29 cm. - Memoirs series ; v. 207. .
p. 581-594.
0871692074 RM130.00
Botany--United States--Pennsylvania.
Botany--Classification.