[Lupines: The Genus Lupinus in Mt. Adams Country]

Field Lupine, Small-flowered Lupine

Lupinus micranthus

Synonyms: Lupinus bicolor, Lupinus bicolor ssp. microphyllus, Lupinus polycarpus

Note that both OR and WA classify this as Lupinus bicolor, but the flowers for both taxa are significantly different, so I've left this as Lupinus micranthus.

Field Lupine, Small-flowered Lupine: Lupinus micranthus (Synonyms: Lupinus bicolor, Lupinus bicolor ssp. microphyllus, Lupinus polycarpus) - Field Lupine, Small-flowered Lupine: Lupinus micranthus (Synonyms: Lupinus bicolor, Lupinus bicolor ssp. microphyllus, Lupinus polycarpus)

The photo at left shows small-flowered lupine as seen along Kreps Lane in Conboy Lake National Wildlife Refuge...........May 19, 2007. The photo at right shows the inflorescence of small-flowered lupine as seen in open oak woodlands on the southeast-facing slopes of Grayback Mountain, about 6 miles south of the Klickitat-Yakima County line......May 14, 2023..

Flower of Field Lupine, Small-flowered Lupine: Lupinus micranthus (Synonyms: Lupinus bicolor, Lupinus bicolor ssp. microphyllus, Lupinus polycarpus) - Field Lupine, Small-flowered Lupine: Lupinus micranthus (Synonyms: Lupinus bicolor, Lupinus bicolor ssp. microphyllus, Lupinus polycarpus)

Two close-up images of the flower and leaves of small-flowered lupine as seen along Kreps Lane in Conboy Lake National Wildlife Refuge..........May 19, 2007. The banner is located further forward, and inclined at narrower angle than the similar bicolored lupine. Note the numerous spreading hairs on the petioles and lower surface of the leaflets.

Field Lupine, Small-flowered Lupine: Lupinus micranthus (Synonyms: Lupinus bicolor, Lupinus bicolor ssp. microphyllus, Lupinus polycarpus)

A field full of small-flowered lupine blooming in a drainage about two miles south of Grayback Mountain, Klickitat Wildlife Area.........April 26, 2016.
Paul Slichter