Mimosa adenantheroides (M. Martens & Galeotti) Benth.

Mimosa adenantheroides (Mart. & Gal.) Bentli. Lond. Journ Bot. 5: 88. 1846.
Acacia adenantheroides Mart. & Gal. Bull. Acad. Brux. 10=: 312. 1843.
A shrub, 1-3 m. high, the twigs bearing a few reflexed prickles, glandular-pubescent. Pinnae 4-9 pairs; leaflets 6-10 pairs, oblong or obliquely oval, 6-12 mm. long, 3-nerved, delicately pinnately veined beneath; spikes axillary, 1.5-3.5 cm. long; peduncle and flowers pubescent; corolla white, 2 mm. long; legume linear, 3-4.5 cm. long, about 6 mm. wide, longapiculate, unarmed, puberulent.
Type locality: Sola and Yolotepeque, Oaxaca. Distribution: Oaxaca.

Mimosa gomezii Britton & Rose, sp. nov
A shrub, the twigs pubescent, more or less prickly. Pinnae 1-5 pairs; leaflets 5-8 pairs, obliquely oblong, 6-8 mna. long, pubescent on both sides, pale beneath, 3-nerved at base; peduncles axillary, sometimes clustered, pubescent; flowers in dense spikes 1-1.5 cm. long; calyx and corolla pubescent, purplish; legume linear, 4-5 cm. long, 5-6 mm. wide, pubescent and glandular, constricted between the seeds, stipitate, long-apiculate, the margins sparingly prickly or unarmed.
Oaxaca. Type from the Valley of Oaxaca, September 20, 1894, Nelson 1479.