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brushpea

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

Phenology Flowering summer.
Habitat Open, dry shrubby vegetation.
Elevation 900–1200 m. (3000–3900 ft.)
Distribution
from FNA
TX; Mexico (Coahuila, Nuevo León)
[BONAP county map]
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 Fabaceae > subfam. Faboideae > Genistidium
Name authority I. M. Johnston: J. Arnold Arbor. 22: 113. (1941)
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