Lysiloma aurita (Schltdl.) Benth.

Lysiloma aurita (Schl.) Benth. Lond. Journ. Bot. 3: 83. 1844
Acacia aurila Schl. Linnaea 12: 572. 1838.
Lysiloma Schiedeana Benth. Lond. Journ. Bot. 3: 83. 1844.
A shrub, or perhaps a small tree, the twigs, petioles, leaf-rachis and peduncles villous or pubescent. Petioles 1-3 cm. long, bearing an oblong, slightly elevated gland; pinnae 15-25 pairs; stipules oblong, semicordate, acuminate, membranous, 1.5-2 cm. long, or sometimes wanting; leaflets 25-60 pairs, linear, 4-5 mm. long, membranous, glabrous or ciliate, obtuse, the midvein nearly central, the lateral venation very obscure; peduncles axillary, solitary or binate, filiform, 3 cm. long or shorter, bearing a small linear bract; flowers short-racemose, densely puberulent, short-pedicelled; racemes 0.6-1.6 cm. long; calyx obconic, about 2 mm. long; corolla 3-4 mm. long.
Type locality: Malpas de Naulingo, Mexico. Distribution: Veracruz.

Lysiloma nelsonii Britton & Rose, sp. nov
Twigs, petioles and leaf-rachis densely short-pilose. Petioles stout, 1.5-2.5 cm. long, bearing a slightly elevated gland about 2 mm. long; stipules caducous or wanting; pinnae 15-23 pairs, the rachilla pilose; leaflets 30-50 pairs, linear, 2-3 mm. long, obtuse, pubescent beneath, glabrate above, the midvein excentric, the lateral venation obscure; fruiting peduncles stout, 2-3 cm. long; flowers apparently capitate; legume linear-oblong, glabrous, pointed, 12-14 cm. long, 2-2.6 cm. wide, its base narrowed, its stipe 1.5-2 cm. long.
Valley of Comitan, Chiapas, about 2000 m. alt., December 8, 1895, Nelson 3485.

Lysiloma multifoliolata Britton & Rose, sp. nov
A tree, about 6 m. high, the twigs, petioles, rachis and peduncles densely pilose. Stipules lanceolate, 10-15 mm. long, caducous; petiolar gland elevated, about 1.5 mm. broad, rounded; pinnae 15-25 pairs, the rachilla pilose; leaflets 40-50 pairs, linear, 2.5-3.5 mm. long, membranous, obtuse, glabrous, the margins ciliate, the midvein central, the lateral venation faint; peduncles solitary or binate, slender, 1.5-3 cm. long; heads globose; flowers shortpedicelled; buds densely short-pubescent; calyx about 1 mm. long; corolla about 2.5 mm. long; stamens white, about 9 mm. long, their sheath about as long as the corolla.
El Salvador and Chiapas. Type from Zacatecaluca, El Salvador, March, 1922, Calderon 340.