[Peavines: The Genus Lathyrus East of the Cascade Mts. of Oregon and Washington]

This photo shows a close-up frontal view of several flowers of Cusick's peavine as seen along Forest Road #4650 at the eastern side of Chief Joseph Canyon in the northern Wallowa-Whitman National Forest........June 26, 2008. Although not shown here, the pinnately compound leaves lack prehensile tendrils at their tips.

This photo shows a close-up sideview of the flower of Cusick's peavine as seen along Forest Road #4650 at the eastern side of Chief Joseph Canyon in the northern Wallowa-Whitman National Forest.........June 26, 2008. Note that the wings are narrower than the keel, while the keel is about as long as the wings.

This photo shows a close-up sideview of the flower of Cusick's peavine as seen along Forest Road #4650 at the eastern side of Chief Joseph Canyon in the northern Wallowa-Whitman National Forest........June 26, 2008. Most of the wing has been removed to show the keel, which is as long as and broader than the wings.

This photo shows a close-up sideview of the flower of Cusick's peavine as seen along Forest Road #4650 at the eastern side of Chief Joseph Canyon in the northern Wallowa-Whitman National Forest.........June 26, 2008. The stigma and style along with the stamens have been exposed. The hairs are oriented on the back of the stigma/style, indicating that this is a peavine and not a vetch.

This photo shows a close-up frontal view of the flower of Cusick's peavine as seen along Forest Road #4650 at the eastern side of Chief Joseph Canyon in the northern Wallowa-Whitman National Forest..........June 26, 2008. Note the reddish to purplish veins running longitudinally along the center of the banner.

Cusick's peavine in bloom along the Ponderosa Loop Trail near the rest area off US Highway 26 on the Ochoco Divide, Ochoco National Forest.......May 19, 2018.

Cusick's peavine as seen along Forest Service Road 5401 about a mile or so downhill and to the north of the Malheur National Forest boundary on Baldy Mt.........June 22, 2011. Note that the leaves lack tendrils at their tips and that the flowers are about 20 mm long.