Lupinus havardii |
Lupinus gracilentus |
|
---|---|---|
Big Bend bluebonnet |
green slender lupine, slender lupine |
|
Habit | Herbs, annual, 1–6 dm, ascending- or appressed-villous. | Herbs, perennial, 2–8 dm, green, puberulent to hairy. |
Stems | ascending or erect, usually branched, sometimes unbranched. |
erect or slightly spreading, clustered, unbranched or branched distally. |
Leaves | cauline, often crowded near base; petiole 2–9 cm, ascending- or appressed-pubescent; leaflets (5 or)7, blades 10–20 × 5–10 mm, adaxial surface glabrate. |
cauline; stipules 10–15 mm; proximal petioles (3–)5–14 cm, distal ones (1–)2–4 cm; leaflets 5–8, blades 35–80 × 2–5 mm, adaxial surface pubescent. |
Racemes | 18–45 cm; flowers well spaced, usually spirally arranged. |
6–20 cm; flowers in 4–8 distinct whorls. |
Peduncles | 5.5–10 cm; bracts deciduous, 4–5 mm. |
6–12 cm; bracts semideciduous, 4–10 mm. |
Pedicels | 5–7 mm. |
2–4 mm. |
Flowers | 10–13(–15) mm; calyx 6–7 mm, abaxial lobe entire, 6 mm, adaxial lobe 3-cleft, 4 mm; corolla bright violet-blue, banner spot creamy or yellow, keel glabrous. |
8–18 mm; calyx bulge or spur 0–1 mm, abaxial lobe 2 or 3-toothed or entire, 5–7 mm, adaxial lobe 2-toothed, 7 mm; corolla blue, banner patch white to yellowish, banner glabrous abaxially, lower keel margins glabrous, adaxial keel sparsely ciliate. |
Legumes | 3.5–5 cm, villous. |
2–3 cm, densely hairy. |
Cotyledons | usually persistent, usually inconspicuous, petiolate. |
deciduous, petiolate. |
Seeds | 6–8. |
6–8. |
2n | = 36. |
|
Lupinus havardii |
Lupinus gracilentus |
|
Phenology | Flowering late winter–early spring. | Flowering Jul–Sep. |
Habitat | Limestone or igneous basins, flats, drainages, gravelly, sandy or silty soils, creosote-lechuguilla shrublands, roadsides. | Open moist sites, subalpine forests. |
Elevation | 600–1400 m. (2000–4600 ft.) | 2500–3500 m. (8200–11500 ft.) |
Distribution |
TX; Mexico (Chihuahua) |
CA |
Discussion | Lupinus havardii is known from the trans-Pecos region of Texas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus gracilentus is known from the southern Sierra Nevada (Rock Creek) in Inyo and Mono counties northward to Yosemite National Park. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Name authority | S. Watson: Proc. Amer. Acad. Arts 17: 369. (1882) — (as havardi) | Greene: Proc. Acad. Nat. Sci. Philadelphia 44: 365. (1893) |
Web links |