Tauroceras cornigerum

Tauroceras cornigerum (L.) Briltoii & Rose
Mimosa cornigera L. Sp. PI. 520. 17.S3.
Acacia cornigera Willd. Sp. PI. 4: lOSO, IS06.
Acacia sphaerocephala Schl. & Cham. Linnaea S: 594. 1830.
Acacia veracruzensis Schenck, Repert. 12: 362. 1913.
Acacia dolichocephala Safford, Journ. Wash. Acad. 5: 355. 1915.
An erect shrub, the twigs glabrous; branches virgate. Spines often much elongated, ascending or widely spreading, united at base, white, usually terete, 2-1 1 cm. long; petiole short, bearing an oblong elevated gland; pinnae 5-16 pairs; leaflets 10-25 pairs, linear, obtuse; peduncles a.xillary, thick, 5-7 mm. long, glabrous, bearing a connate involucre near the base; flowers in dense globose or short-oblong heads; legume oblong, terete, 6 cm. long, the beak 1.5 cm. long.
Type locality: Mexico.
Distribution: Tamaulipas and San Luis Potosi to Veracruz, and Oaxaca.