Proceedings of The Academy of Natural Sciences (Vol. XCII, 1940)
- ISBN-10
- 1437954936
- ISBN-13
- 9781437954937
- Language
- English
- Publisher
- Academy of Natural Sciences
Description
Penstemon is dominantly of the flora of western temperate North America , as is Castilleja , although both genera are also ... Scrophulariaceae of Eastern Temperate North America ” , nor will all of them come logically within either my ...
