Chloroleucon mangense var. leucospermum (Brandegee) Barneby & J. W. Grimes

Chloroleucon guatemalense Britton & Rose; Record, Tropical Woods 10: 24. 1927.
A shrub or tree, the twigs slender, glabrous. Petioles pubescent, bearing a subsessile gland near the middle; pinnae 4 pairs; rachis hairy, bearing a gland between the upper pair; leaflets 5-9 pairs, oblong to obovate, 8-10 mm. long, pubescent on both sides; legume 8-18 cm. long, 8-12 mm. broad, glabrous.
Type locality; Near Olanchito. Honduras. Distribution; Guatemala and Honduras.

Chloroleucon leucospermum (Brand.) Britton & Rose
Pithecolobium leucospermum Brand. Univ. Cal. Pub. Bot. 10: 182. 1922.
Branches flexuous; foliage and peduncles villous-pubescent. Stipular spines, when present, stout, up to 2 cm. long; petioles slender, 1-2 cm. long, bearing an obconic gland; pinnae 2-4 pairs; leaflets 8-10 pairs, oblong, or the upper oblanceolate, acutish, or obtuse, 10-13 mm. long; peduncles 1-2 cm. long; calyx about 2 mm. long, sparingly pubescent; corolla ochroleucous, about 3 mm. long, sparingly pubescent; stamen-tube about 2 mm. long; legume glabrous, veined, coriaceous, 10-15 cm. long, 7 mm. wide, nearly straight, flat, at length dehiscent, slightly undulate; seeds oblong, nearly white.
Type locality: Near Cameron, Veracruz. Distribution: Veracruz; Tepic; Yucatan; Guatemala.

Chloroleucon undulatum Britton & Rose, sp. nov
A shrub, 3-4 m. high, the twigs glabrous or pubescent. Petioles glabrous or pubescent, bearing a subsessile gland near the middle; pinnae 3-5 pairs; leaflets 5-11 pairs, oblong, 5-11 mm. long, glabrous above, glabrous or pubescent beneath, strongly veined; peduncle 1-3 cm. long, pubescent when young; corolla slender, glabrous except the margin of the lobes; legume glabrous, 15-25 cm. long, 5-7 mm. wide, the margins imdulate.
Sonora to Colima. Type from Sierra de Alamos, Sonora, March 18, 1910, Rose, Slandley & Russell 13041.

Chloroleucon langlassei Britton & Rose, n. sp
A tree, 4-6 m. high. Petioles glabrous or pubescent, bearing a small sessile gland near the middle; pinnae 2 or 3 pairs; rachis glabrous or pubescent, often bearing a gland between the upper pair of leaflets; leaflets 10-14 pairs, broadly linear, 5-8 mm. long, glabrous, or pubescent on both sides; peduncle 12-25 mm. long; legume linear, 12-18 cm. long, cuneate at base, rounded or acuminate at apex, glabrous, the margins straight.
Petatlan, Michoacan or Guerrero, November 23, 1898, E. Langlasse 687a.