Genistidium dumosum |
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brushpea |
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Habit | Shrubs to 1 m. Leaves 0.7–2(–3) cm; stipules subulate, 1–2 × 0.5 mm; petiole 0.2–0.6 cm, strigose; rachis canaliculate; petiolules 1 mm, glabrate; leaflet blades linear to narrowly oblanceolate, 5–20(–25) × 2–6(–8) mm, base attenuate to rounded, apex rounded. |
Inflorescences | bracts caducous, linear-lanceolate, 1–1.5 × 1 mm. |
Pedicels | 1.5–2.5 mm. |
Flowers | calyx tube 2.5–3.5 mm, sericeous, lobes 3–4 mm, abaxial ones longer, adaxial 2 slightly more connate with each other than with laterals; corolla 6–8 mm, glabrous; filaments subequal; anthers to 1 mm, dehiscing longitudinally; pistil densely sericeous. |
Fruits | light to dark grayish brown, 15–30 × 4–6 mm, base blunt, apex acute, often terminating in persistent style base. |
2n | = 32. |
Genistidium dumosum |
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Phenology | Flowering summer. |
Habitat | Open, dry shrubby vegetation. |
Elevation | 900–1200 m. (3000–3900 ft.) |
Distribution |
TX; Mexico (Coahuila, Nuevo León) |
Discussion | Genistidium dumosum comprises three disjunct population centers, one in western Texas (Brewster County), the others in west-central Coahuila and southern Nuevo León (M. Lavin and M. Sousa S. 1995). By all indications, populations are few and small, and whether these three centers represent distinct taxa remains unsettled. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | |
Name authority | I. M. Johnston: J. Arnold Arbor. 22: 113. (1941) |
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