Leucaena collinsii Britton & Rose

Leucaena collinsii Britton & Rose, sp. nov
Leaves nearly 2 dm. long, the petiole and rachis puberulent on tlie upper side. Petiole stout, 2.5-3 cm. long, bearing a depressed elliptic gland about 3 mm. long above the middle; pinnae about 14 pairs, short-stalked, the slender rachilla short-pilose above; leaflets 35-45 pairs, lanceolate, 6-9 mm. long, glabrate with ciliate margins, acute, pale green and reticulateveined beneath, the midvein excentric; legume linear, glabrous, 15-18 cm. long, 16-18 mm. wide, blunt-pointed, the base cuneate, the stipe about 1 cm. long or shorter.
Castia Gutierrez, Chiapas, January 6, 1907, Collins & Doyle 157.