A field guide to Pacific States wildflowers : field marks of species found in Washington, Oregon, California, and adjacent areas : a visual approach arranged by color, form, and detail / text by Theodore F. Niehaus ; ill. by Charles L. Ripper ; sponsored by the National Audubon Society and National Wildlife Federation.

Author/creator Niehaus, Theodore F.
Other author Ripper, Charles L.
Format Book
Publication InfoBoston : Houghton Mifflin, 1976.
Description432 pages : illustrations ; 19 cm.
Subjects

SeriesPeterson field guide series ; 22
Peterson field guide series 22. ^A82968
General noteIncludes index.
LCCN 76005873
ISBN0395216249