[Lupines: The Genus Lupinus in Mount Adams Country]
Bingen Lupine, Whitish Lupine
Lupinus sulphureus var. subsaccatus
Synonyms: Lupinus bingenensis, Lupinus bingenensis var. bingenensis, Lupinus leucopsis, Lupinus leucopsis var. bingenensis, Lupinus sulphureus ssp. subsccatus, Lupinus sulphureus var. bingensis
Bingen lupine as seen from Klickitat Oaks Phase 2, a Columbia Land Trust property on the south rim of Snyder Canyon, Klickitat County, WA.........May 6, 2024.
The photo at right shows a close-up sideview of the flower of Bingen lupine as
seen atop the Columbia Hills to the northeast of The Dalles, OR..........May
14, 2006. The wing petals have been removed to show the keel, with the tip of
the keel narrowing abruptly and held nearly erect.
Characteristics:
Bingen lupine is a perennial lupine to 10 dm tall. It tends
to have basal leaves present during flowering, with the lower leaf petioles
3 to 5 times longer than the leaflet blades, while the upper stem leaves may
have petioles shorter than the blades. The compound palmate leaves may have
from 9 to 11 narrlw, oblanceolate leaflets with acute tips. The leaflets may
be hairless above and sparsely to very hairy beneath, or they may be equally
very haired on both surfaces. Variety subsaccatus tends to have pubescence
on both leaflet surfaces.
The flowers are bluish or purple (variety sulphureus
has yellow flowers) and found on 6 to 15 cm long racemes (usually less than
10 cm in variety subsaccatus. The calyx is silky and it is asymetrical
although it isn't spurred. The upper lip of the flower is bidentate, while the
lower is entire. The banner isn't reflexed very much from the wings or keel.
Similar Species:
Bingen Lupine: Lupinus bingensis - Stems with appressed hairs. The inflorescence is more open and pyramidal
Soft Lupine: Lupinus mollis - Stems with spreading hairs. The inflorescence is fairly dense and more oval or cylindrical in shape.
Habitat:
Prairies and sagebrush desert from the foothills into the lower
mountains.
Range:
Sulphur Lupine ranges from British Columbia south along the
eastern edge of the Cascades to California, and ranges eastward to Idaho.
It may be found down the Columbia River to the Willamette River
Valley, and into southwestern Washington.
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Bingen lupine as seen from near the Dalles Mt. Ranch trailhead at Columbia Hills Historical State Park.........May 2, 2018.
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Bingen lupine as seen atop the Columbia Hills..........May 14, 2006.
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The photo at left shows the hairs on the stems of Bingen lupine are largely appressed,
as seen in this photo. The similar whitish lupine
(Lupinus mollis) has hairs that are generally spreading on the stems.
The photo at right shows the inflorescence of Bingen lupine as seen along the summit ridge of Mill Creek Ridge Preserve, a Columbia Land Trust property near The Dalles, OR.....Aptil 11, 2024.
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Early blooming Bingen lupine as seen along the Lyle-Cherry Orchard Trail, Columbia River Gorge.........April 2, 2015.
Paul Slichter