Burke's Lupine, Large-leaved Lupine, Many-leaved Lupine

The photo above shows a flower of Burke's lupine with a wing peeled away, exposing the keel. Note the numerous hairs along the upper margin of the keel. Photographed along the gravel road to Penland Lake, Umatilla N.F. (Morrow County, OR)........June 22, 2007.

The photo above shows the large, broad, palmately compound leaf of Burke's lupine. The leaflets are elliptical to somewhat oblanceolate in outline, although the tips are more acute and less rounded than those of the similar broadleaf lupine (which also tends to have shorter leaflets). Photographed along the gravel road to Penland Lake, Umatilla N.F. (Morrow County, OR).........June 22, 2007.

The photo above shows a close-up of the herbage on the stem within the inflorescence of Burke's lupine as seen along the gravel road to Penland Lake, Umatilla N.F. (Morrow County, OR).........June 22, 2007.

The photo above shows Burke's lupine as seen along the gravel road to Penland Lake, Umatilla N.F. (Morrow County, OR)........June 22, 2007. A fairly robust plant, Burke's lupine typically grows as numerous leafy stems with numerous elongated racemes of flowers as seen above. The leaves are large and long-petioled with basal leaves present at the time of flowering. This species tends to be smaller in stature, have a more solid stem, and found in drier habitats than the similar large-leaved lupine (Lupinus polyphyllus var. polyphyllus).

What may be Burke's lupine as seen along the Swauk Discovery Trail about one and one-half mile south of Swauk Pass, Kittitas County, Washington..........June 5, 2015.

Burke's lupine as seen along the East Fork Lostine River Trail #1662 on the banks of the East Fork Lostine River, Eagle Cap Wilderness........August 4, 2016.