[Lupines: The Genus Lupinus in the Cascade Mountains of Oregon and Washington]

Longspur Lupine, Spur Lupine, Spurred Lupine

Lupinus arbustus

Synonyms: Lupinus amabilis, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. arbustus var. arbustus, Lupinus arbustus ssp. arbustus var. montanus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. montanus, Lupinus argenteus ssp. argenteus var. laxiflorus, Lupinus argenteus var. laxiflorus, Lupinus caudatus, Lupinus caudatus var. submanes, Lupinus caudatus var. subtenellus, Lupinus laxiflorus, Lupinus laxiflorus ssp. laxiflorus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleianus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus lyleianus, Lupinus mucronulatus var. umatillensis, Lupinus sulphureus var. applegatianus

Flower of Longspur Lupine, Spur Lupine, Spurred Lupine: Lupinus arbustus (Synonyms: Lupinus amabilis, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. arbustus var. arbustus, Lupinus arbustus ssp. arbustus var. montanus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. montanus, Lupinus argenteus ssp. argenteus var. laxiflorus, Lupinus argenteus var. laxiflorus, Lupinus caudatus, Lupinus caudatus var. submanes, Lupinus caudatus var. subtenellus, Lupinus laxiflorus, Lupinus laxiflorus ssp. laxiflorus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleianus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus lyleianus, Lupinus mucronulatus var. umatillensis, Lupinus sulphureus var. applegatianus) - Longspur Lupine, Spur Lupine, Spurred Lupine: Lupinus arbustus (Synonyms: Lupinus amabilis, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. arbustus var. arbustus, Lupinus arbustus ssp. arbustus var. montanus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. montanus, Lupinus argenteus ssp. argenteus var. laxiflorus, Lupinus argenteus var. laxiflorus, Lupinus caudatus, Lupinus caudatus var. submanes, Lupinus caudatus var. subtenellus, Lupinus laxiflorus, Lupinus laxiflorus ssp. laxiflorus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleianus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus lyleianus, Lupinus mucronulatus var. umatillensis, Lupinus sulphureus var. applegatianus)

The photo at left shows a close-up of the flower of spurred lupine as seen along the School Canyon Trail #468 near the trailhead, Badger Creek Wilderness........May 10, 2015. The spurred calyx as well as the hairs on the upper tip of the wings can be clearly seen. The photo at right shows spurred lupine blooming on a bald about one-quarter mile west of the Surveyor's Ridge Trail #688 about two miles northwest of Gibson Prairie Horse Camp, Mount Hood National Forest.....June 11, 2024.

Longspur Lupine, Spur Lupine, Spurred Lupine: Lupinus arbustus (Synonyms: Lupinus amabilis, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. arbustus var. arbustus, Lupinus arbustus ssp. arbustus var. montanus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. montanus, Lupinus argenteus ssp. argenteus var. laxiflorus, Lupinus argenteus var. laxiflorus, Lupinus caudatus, Lupinus caudatus var. submanes, Lupinus caudatus var. subtenellus, Lupinus laxiflorus, Lupinus laxiflorus ssp. laxiflorus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleianus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus lyleianus, Lupinus mucronulatus var. umatillensis, Lupinus sulphureus var. applegatianus) - Longspur Lupine, Spur Lupine, Spurred Lupine: Lupinus arbustus (Synonyms: Lupinus amabilis, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. arbustus var. arbustus, Lupinus arbustus ssp. arbustus var. montanus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. montanus, Lupinus argenteus ssp. argenteus var. laxiflorus, Lupinus argenteus var. laxiflorus, Lupinus caudatus, Lupinus caudatus var. submanes, Lupinus caudatus var. subtenellus, Lupinus laxiflorus, Lupinus laxiflorus ssp. laxiflorus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleianus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus lyleianus, Lupinus mucronulatus var. umatillensis, Lupinus sulphureus var. applegatianus)

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.

Flower of Longspur Lupine, Spur Lupine, Spurred Lupine: Lupinus arbustus (Synonyms: Lupinus amabilis, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. arbustus var. arbustus, Lupinus arbustus ssp. arbustus var. montanus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. montanus, Lupinus argenteus ssp. argenteus var. laxiflorus, Lupinus argenteus var. laxiflorus, Lupinus caudatus, Lupinus caudatus var. submanes, Lupinus caudatus var. subtenellus, Lupinus laxiflorus, Lupinus laxiflorus ssp. laxiflorus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleianus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus lyleianus, Lupinus mucronulatus var. umatillensis, Lupinus sulphureus var. applegatianus)

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.

Longspur Lupine, Spur Lupine, Spurred Lupine: Lupinus arbustus (Synonyms: Lupinus amabilis, Lupinus arbustus ssp. arbustus, Lupinus arbustus ssp. arbustus var. arbustus, Lupinus arbustus ssp. arbustus var. montanus, Lupinus arbustus ssp. calcaratus, Lupinus arbustus ssp. neolaxiflorus, Lupinus arbustus ssp. pseudoparviflorus, Lupinus arbustus ssp. silvicola, Lupinus arbustus var. montanus, Lupinus argenteus ssp. argenteus var. laxiflorus, Lupinus argenteus var. laxiflorus, Lupinus caudatus, Lupinus caudatus var. submanes, Lupinus caudatus var. subtenellus, Lupinus laxiflorus, Lupinus laxiflorus ssp. laxiflorus, Lupinus laxiflorus var. calcaratus, Lupinus laxiflorus var. cognatus, Lupinus laxiflorus var. elmerianus, Lupinus laxiflorus var. laxiflorus, Lupinus laxiflorus var. lyleianus, Lupinus laxiflorus var. pseudoparviflorus, Lupinus laxiflorus var. silvicola, Lupinus lyleianus, Lupinus mucronulatus var. umatillensis, Lupinus sulphureus var. applegatianus)

The photo above 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.
Paul Slichter