Silvery Lupine, Longspur Lupine, Spur Lupine, Spurred Lupine: Lupinus arbustus (Synonyms: Lupinus amniculi-putori, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. calcaratus, Lupinus arbustus var. montanus, Lupinus argenteus var. laxiflorus , Lupinus argenteus var. stenophyllus , Lupinus argenteus var. tenellus , Lupinus calcaratus, Lupinus caudatus var. submanens, Lupinus laxiflorus, Lupinus laxiflorus var. arbustus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleanus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus laxispicatus, Lupinus mucronulatus var. umatillensis, Lupinus wenachensis, Lupinus yakimensis)

Spurred lupine as seen at about 3800' on Washington DNR land just south of the Yakama Reservation on the southeastern side of Mt. Adams..........May 14, 2005. The photos were taken about one-half hour after sunset, so I was not able to obtain close-ups of the flowers.

The photo above shows a close-up of spured lupine as seen at 4100' atop the ridge dividing the Dairy and Cougar Creek drainages. Note the prominent spur at the upper base of the flower, the banner which rises narrowly above the wings and the minute hairs at the upper tips of the wing petals, a key characteristic of this species..........May 29, 2006.

Spurred lupine as seen in open coniferous forest along the Willard Springs Trail, Conboy Lake National Wildlife Refuge..........May15, 2021.

The photo at left shows spurred lupine in the drier meadows surrounding the DNR rock quarry at about 4100' abreast a ridge dividing the Dairy Creek and Cougar Creek drainages at the southeastern corner of Mt. Adams.........May 29, 2005. The photo shows the moderately long and fairly open inflorescence of this species to good effect. The photo at right shows spurred lupine as seen in open coniferous forest along the Willard Springs Trail, Conboy Lake National Wildlife Refuge..........May 20, 2023.