[Clovers: The Genus Trifolium in the Columbia River Gorge of Oregon and Washington]

Inflorescence and trifoliate upper stem leaf of tree clover as seen at Catherine Creek in the Columbia River Gorge.........June 3, 2009.

Close-up of the inflorescence of tree clover as seen at Catherine Creek in the Columbia River Gorge........June 3, 2009. Note how all the flowers are oriented downwards and the corollas are much shorter than the calyx lobes.

Inflorescence and upper stem leaves of tree clover as seen at Catherine Creek in the Columbia River Gorge.........June 3, 2009.

Additional images of tre clover as seen at the Sondino Unit, Klickitat State Wildlife Area...........June 6, 2012.