A biosystematic investigation was undertaken in 15
species and three subspecies of the genus Aster, in western
North America. Previous studies had been based entirely on
external morphological features, and it was believed that
much could be learned about the natural affinities of the
taxa by exploring their cytological and...
A taxonomic and ecologic study was made of the
vascular plants of a section of the Owyhee River Canyon
of Malheur County, Oregon. The particular study area is
known as Three Forks, and is located at the junction of
the North Fork of the Owyhee River, East Fork of the...
