Lupinus truncatus |
Lupinus subcarnosus |
|
---|---|---|
blunt-leaf lupine, collared annual lupine |
Texas bluebonnet |
|
Habit | Herbs, annual, 2–5(–8) dm, finely pubescent, appearing glabrous. | Herbs, annual, 1.5–4 dm, pubescent, hairs appressed or ascending. |
Stems | ascending or erect, branched or unbranched. |
ascending or erect, branched. |
Leaves | cauline; petiole flattened and leafletlike, 3–10 cm; leaflets 5–8, blades 20–40 × 2–5 mm, apex usually truncate, adaxial surface glabrous. |
cauline, often crowded near base; petiole 1–6 cm; leaflets 5 or 6, blades 10–25 × 4–15 mm, adaxial surface glabrate. |
Racemes | 6–35 cm; flowers loosely spirally arranged. |
6–12 cm; flowers crowded or spaced, spirally arranged, crowded on young growth. |
Peduncles | 3–10 cm; bracts persistent, 2–5 mm. |
3–8 cm; bracts deciduous, 2.5–3 mm. |
Pedicels | 2–4 mm. |
3–7 mm. |
Flowers | 8–13 mm; calyx 3–4 mm, lobes ± equal, abaxial lobe entire or shallowly cleft, 2.5–3 mm, adaxial lobe deeply cleft, 1.5–2 mm; corolla banner and wings magenta, banner spot white or yellowish, becoming dark magenta, keel stout, blunt, lower and upper margins ciliate from claw to middle. |
9–12 mm; calyx 5–6 mm, abaxial lobe 3-lobed, 3–4 mm, adaxial lobe cleft, 2–2.5 mm, hairs becoming yellowish gray or brown on dried material; corolla pale blue-violet, banner spot white, keel glabrous, wings inflated. |
Legumes | ±3 cm, pubescent. |
2.5–3.5 cm, yellowish gray- or brown-villous. |
Cotyledons | deciduous, petiolate. |
usually persistent, petiolate. |
Seeds | 6–8. |
4 or 5. |
2n | = 36. |
|
Lupinus truncatus |
Lupinus subcarnosus |
|
Phenology | Flowering spring (Mar–May). | Flowering spring. |
Habitat | Openings in coastal sage scrub, chaparral, oak woodlands, burned areas. | Sandy soils, roadsides, open woodlands, coastal plains. |
Elevation | 0–1200 m. (0–3900 ft.) | 0–300 m. (0–1000 ft.) |
Distribution |
CA; Mexico (Baja California)
|
TX; Mexico (Coahuila, Nuevo Léon) |
Discussion | Lupinus truncatus is known in the flora area from San Cruz County southward in the Central and South Coast regions; the South Coast, Transverse, and Peninsular ranges; and the Channel Islands. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus subcarnosus is abundant and conspicuous in the coastal plain of southeastern Texas and extends into northern Mexico. (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 | Nuttall ex Hooker & Arnott: Bot. Beechey Voy., 336. (1838) | Hooker: Bot. Mag. 63: plate 3467. (1836) |
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