Lupinus arboreus |
Lupinus sericeus |
|
---|---|---|
tree lupine, yellow bush lupine |
silky lupine |
|
Habit | Plants perennial, 10–20 dm. | Plants perennial, 2–10(14) dm. |
Stems | ascending to erect; woody, obscurely to slightly pubescent. |
erect, not woody, pubescent. |
Leaves | cauline; leaflets 5–10(12), 15–60 × 4–10 mm, linear-elliptic to oblanceolate; tips acute, usually apiculate; surfaces abaxially pubescent to sericeous, adaxially glabrate to pubescent; petioles (15)20–40 mm. |
cauline, rarely with some leaves clustered near bases; leaflets 6–9, 20–70 × 4–12 mm, linear-elliptic to oblanceolate; tips acute, often apiculate; surfaces strigillose; petioles (18)23–90 mm. |
Inflorescences | (4.5)7.5–21 cm; peduncles (3)5–11.5 cm; pedicels 5–11 mm. |
9–17(24) cm; peduncles 3–8.7 cm; pedicels 3–5(7) mm. |
Flowers | calyces 8–10 mm, not spurred; lips equal to subequal; corollas (12)14–18 mm, usually yellow, rarely yellow and blue or purple; banners typical type; spot absent. |
calyces 4–10 mm, not spurred, sometimes slightly saccate; lips subequal to unequal; corollas 12–16 mm; whitish to blue; banners typical type, abaxially pubescent; spot white, yellow or brown. |
Fruits | (20)30–70 mm, villous. |
1.6–3.5 cm, pilosulose. |
Seeds | 2–8. |
2–6. |
Lupinus arboreus |
Lupinus sericeus |
|
Distribution | ||
Discussion | Dunes, sandy areas. Flowering Apr–Jul. 0–300 m. Est, WV. CA, WA; north to British Columbia. Native and exotic. While usually occurring near the ocean, Lupinus arboreus is occasionally found further inland, often as an ornamental plant in parking lot vegetation strips. This species appears to be expanding its range northward. It may occasionally hybridize with L. littoralis. |
Disturbed areas, roadsides, meadows, sagebrush open forests. Flowering May–Aug. 50–2200 m. BW, Casc, Col. ID, NV, WA; north to British Columbia, northeast to Alberta, east to WY, southeast to NM. Native. This species may be locally abundant in recently burned areas. |
Source | Flora of Oregon, volume 2, page 699 Paul Severns, Stephen Meyers, Christopher Royce |
Flora of Oregon, volume 2 draft Paul Severns, Stephen Meyers, Christopher Royce |
Sibling taxa | ||
Synonyms | Lupinus leucopsis, Lupinus leucopsis var. mollis, Lupinus leucopsis var. shermanensis, Lupinus ornatus, Lupinus sericeus var. fikeranus, Lupinus sericeus var. flexuosus, Lupinus sericeus var. sericeus, Lupinus sericeus var. wallowensis | |
Web links |
|