Senegalia macilenta (Rose) Britton & Rose

Senegalia macilenta (Rose) Britton & Rose
Acacia macilenta Rose, Contr. U. S. Nat. Herb. 8: 31. 1903.
A tree, 6 m. high, the twigs pubemlent, unarmed. Petiole and rachis pubescent, bearing a gland near the base of the petiole and between 1 or more of the uppermost pairs of pinnae; pinnae 10-25 pairs; leaflets 20-30 pairs, linear, 4-6 mm. long, acute, glabrous and shining above, often pubescent beneath; inflorescence a terminal raceme of spikes 2-3 dm. long; spikes often in pairs, 10-12 cm. long; calyx minute, puberulent; legume 10-12 cm. long. 2 cm. broad, tomentose, thin, obtuse, cuneate at base.
Type locality: Colima. Distribution: Colima and Jalisco.