Subshrubs, to 40 cm; from thick taproot. Mature stems yellow to brown, striate, with glandular-punctate trichomes. Leaves 50–60 × 30–35 mm; stipules oblanceolate, 1.5–3 × 1.5–2 mm, margins slightly serrate to laciniate, ciliate with simple trichomes, mixed with glandular-punctate trichomes; pinnae (3–)5–7; leaflets 6–10 per pinna, blades oblong, 3–7 × 1.2–3 mm, apex rounded, surfaces glabrous or puberulent with scattered glandular-punctate trichomes abaxially, primarily submarginally, glabrous or puberulent adaxially. Racemes 6–25-flowered, terminal, 7–13 cm. Flowers nutant, turbinate in outline, 6–8 × 6–7 mm; abaxial sepal 5–6 × 2 mm; lateral sepals 5 × 3–3.5 mm; sepals sparsely pilose on margins and abaxial midvein, also with submarginal glandular-punctate trichomes; banner yellow, 5–6 × 2–2.5 mm, tuft of trichomes in fold and at base of claw, also with few glandular-punctate trichomes abaxially on expanded blade; lateral petals yellow, 5.9–5.5 × 3–3.5 mm, gla­brous. Legumes upright, bilaterally symmetrical, oval in outline, 15–21 × 7–10 mm, glabrous or puberulent and with few glandular-punctate trichomes, margins with black, glandular-punctate trichomes and many multicellular projections to 1 mm, each terminating in radiating trichomes or cap. Seeds 1 or 2.

Phenology: Flowering spring (late fall).
Habitat: Live oak savanna, rocky clay or limestone.
Elevation: 400–800 m.

Distribution

• Generated Map
• Legacy Map

Tex.

Discussion

Pomaria brachycarpa is restricted to Crockett, Edwards, Kimball, Kinney, Menard, and Sutton counties on the Edwards Plateau of central Texas. A report of this species from New Mexico by W. C. Martin and C. R. Hutchins (1980) stems from “New Mexico” printed (in error) on the Wright type sheet and thus reported by A. Gray in his description as occurring there (B. B. Simpson 1998).

Selected References

None.

Lower Taxa

None.