Shrubs to 1.5(–3) m. Leaves: stipules lanceolate to ovate-lanceolate, to 7 mm; pinnae 1 or 2(or 3) pairs; leaflets (10–)14–34(–44), blades oblong to ellip­tic, 4–13 × 1–5.5 mm. Peduncles (1–)1.6–7(–10.5) cm at anthesis. Inflorescences usually axillary, rarely terminal in short pseudopanicles. Flowers: calyx 1.5–2 mm; corolla 3–3.5 mm; filaments 20 mm, white in proximal 1/2, red-purple in distal 1/2. Legumes to 100 × 6 mm. Seeds flattened, widely rhomboid to widely ovoid, 4 × 3 mm. 2n = 26.

Phenology: Flowering spring–summer.
Habitat: Dry, rocky calcareous slopes in desert scrub.
Elevation: 1200–2000 m.

Distribution

• Generated Map
• Legacy Map

Loading map...

Tex., Mexico.

Discussion

Zapoteca media has been recorded in disjunct localities throughout the Chihuahuan Desert, as well as in the semiarid areas of Puebla and Oaxaca.

Selected References

None.

Lower Taxa

None.