Vegetative keys to grasses of Oregon, Pacific Northwest, N. America, etc.

[Adolf Ceska]

>  Does anyone know of any vegetative keys to the grasses of Oregon, the 
>Pacific Northwest, the United States, or North America (in descending order 
>of desirability)?


A good key to the grasses of the Pacific Northwest based on vegetative
characters was published in

Hitchcock, C.L. et al. 1969. Vascular plants of the Pacific Northwest,
Volume 1. - University of Washington Press, Seattle.


Adolf Ceska, Victoria, B.C., Canada 
aceska at cue.bc.ca