Lupinus brevicaulis |
Lupinus malacophyllus |
|
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sand lupine, short stem blue lupine, short-stem lupine |
jawleaf lupine |
|
Habit | Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm. | Herbs, annual, 0.7–1.6 dm, softly villous, with fine, spreading hairs, hairs more than 1 mm. |
Stems | very short, tufted, branched. |
ascending or erect, branched or unbranched. |
Leaves | cauline, crowded near base; stipules well developed; petiole 1–6 cm; leaflets (3 or)5–9, blades 8–20 × 2–9 mm, adaxial surface glabrous. |
basal and cauline; stipules well developed; petiole 1.5–4.5 cm; leaflets 5–7, blades 7–22 × 3–6 mm, adaxial surface softly villous. |
Racemes | dense, 3–16-flowered, 1–8 cm; flowers spirally arranged, crowded. |
well exserted, several–many-flowered, 3–7 cm; flowers crowded, whorled proximally, becoming spirally arranged distally. |
Peduncles | 1–8(–10) cm; bracts persistent, straight, 2–3 mm. |
2–5.5 cm; bracts persistent, 5–7 mm. |
Pedicels | 0.3–1.5 mm. |
2–4 mm. |
Flowers | 6–8 mm; calyx abaxial lobe entire or shallowly cleft, ± 6 mm, adaxial lobe 2-toothed, 3 mm, less than 1/2 as long as abaxial; corolla bright blue, banner spot white or yellow, keel glabrous. |
8–10 mm; calyx 5–8 mm, lobes unequal, adaxial lobe less than 1/2 as long as abaxial; corolla blue or whitish and blue-tipped, keel glabrous. |
Legumes | not undulate, 1 cm, thinly pilose to coarsely hirsute. |
not obviously undulate, 1–1.3 cm, softly villous-pilose. |
Cotyledons | persistent, disclike, sessile. |
persistent or deciduous, disclike, sessile, leaving a circular scar. |
Seeds | 1 or 2, smooth. |
2. |
Lupinus brevicaulis |
Lupinus malacophyllus |
|
Phenology | Flowering spring. | Flowering spring–early summer (mid Apr–Jun). |
Habitat | Sandy washes, open areas, grasslands, pinyon pine-juniper forests, creosote bush scrub, mesquite. | Colonial in openings among sagebrush on sandy or gravelly flats and foothill slopes. |
Elevation | 300–2400 m. (1000–7900 ft.) | 1400–1800 m. (4600–5900 ft.) |
Distribution |
AZ; CA; CO; NM; NV; OR; UT; WY; Mexico (Chihuahua, Sonora)
|
NV |
Discussion | Lupinus brevicaulis resembles L. flavoculatus except that its flowers are smaller. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus malacophyllus is known from Washoe and adjacent counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lupinus | Fabaceae > subfam. Faboideae > Lupinus |
Sibling taxa | ||
Name authority | S. Watson: Botany (Fortieth Parallel), 53, plate 7, figs. 1–4. (1871) | Greene: Pittonia 1: 215. (1888) |
Web links |