Lupinus brevicaulis |
Lupinus pratensis |
|
---|---|---|
sand lupine, short stem blue lupine, short-stem lupine |
Inyo Meadow lupine |
|
Habit | Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm. | Herbs, perennial, 3–7 dm, green, hairy. |
Stems | very short, tufted, branched. |
erect, unbranched or branched distally, hollow. |
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, green; stipules 5–20 mm; basal petioles 10–25 cm, cauline 1–4 cm; leaflets 5–10, blades 30–80(–130) × 5–8 mm, adaxial surface strigose, hairs less than 1 mm. |
Racemes | dense, 3–16-flowered, 1–8 cm; flowers spirally arranged, crowded. |
5–28 cm, usually exceeding leaves; flowers dense. |
Peduncles | 1–8(–10) cm; bracts persistent, straight, 2–3 mm. |
4–17 cm; bracts persistent, 5–10 mm. |
Pedicels | 0.3–1.5 mm. |
1–3 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. |
10–12 mm; calyx bulge or spur 0–1 mm, abaxial lobe entire, 5–6 mm, adaxial lobe 2-toothed, 4–7 mm; corolla violet to dark blue, banner patch orange to red, banner usually glabrous abaxially, rarely hairy, lower keel margins glabrous, adaxial margin densely ciliate. |
Legumes | not undulate, 1 cm, thinly pilose to coarsely hirsute. |
1.5–2 cm, hairy to woolly. |
Cotyledons | persistent, disclike, sessile. |
deciduous, petiolate. |
Seeds | 1 or 2, smooth. |
4–6, brown, mottled tan, 3–4 mm. |
Lupinus brevicaulis |
Lupinus pratensis |
|
Phenology | Flowering spring. | Flowering May–Sep. |
Habitat | Sandy washes, open areas, grasslands, pinyon pine-juniper forests, creosote bush scrub, mesquite. | Meadows, stream banks, sagebrush scrub to subalpine forests. |
Elevation | 300–2400 m. (1000–7900 ft.) | 2000–3500 m. (6600–11500 ft.) |
Distribution |
AZ; CA; CO; NM; NV; OR; UT; WY; Mexico (Chihuahua, Sonora)
|
CA
|
Discussion | Lupinus brevicaulis resembles L. flavoculatus except that its flowers are smaller. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus pratensis is known from the southern Sierra Nevada in Fresno, Inyo, Mono, and Tulare counties. Plants from Big Pine Creek in Inyo County with banners that are hairy abaxially have been called var. eriostachyus. (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 | ||
Synonyms | L. pratensis var. eriostachyus, L. sellulus var. elatus | |
Name authority | S. Watson: Botany (Fortieth Parallel), 53, plate 7, figs. 1–4. (1871) | A. Heller: Muhlenbergia 2: 210. (1906) |
Web links |