Nelson's Mimosa

Leptoglottis latidens Small
Morongia talidens Small. Bull. N. Y. Bot. Gard. 2: 98. 1901. Schrankia latidens K. Schum. Bot. Jahresb. 29': 540. 1903.
Glabrous throughout, light green; stems slender, 3-10 dm. long, armed with distant prickles. vStipules very short; petioles and rachis very slender, sparingly prickly; petioles about 3 cm. long or shorter; pinnae 1 or 2 pairs; leaflets 8-12 pairs, oblong, 3-8 mm. long, very obscurely veined, the apex obtuse but apiculate ; fruiting peduncles rather stout, sparingly prickly, about 4 cm. long; legume subterete, 3-7 cm. long, copiously armed with broad-based prickles, the slender beak 1-1.5 cm. long.
Type locality: Kenedy, Carnes County, Texas. Distribution: Known only from the type locality.

Leptoglottis Halliana Britton & Rose, sp. nov
Glabrous throughout ; stem vers' slendtr, 6 dm. long or longer, armed with short prickles. Stipules 3-4 mm. long; petioles very slender, prickly, 2-5 cm. long; pinnae 4-6 pairs, filiformstalked; leaflets 12-16 pairs, linear, membranous, about 2 mm. long, sharply acute, the midvein nearly central; peduncles filiform, naked or sparingly prickly, 2-4 cm. long; heads small; legume subterete, very slender, 12-15 cm. long, about 1.5 mm. thick, armed with a few scattered prickles, its nearly filiform beak 2-3 cm. long.
Sandy hills, Hempstead, Texas, June 1, 1912, Elihu Hall 171.

Leptoglottis nelsonii Britton & Rose, sp. nov
Slender, herbaceous, 5-7 dm. high, the stems angled, glabrous, prickly. Stipules linear; petioles and rachis prickly; pinnae 2 or 3 pairs; leaflets 10-12 pairs, 4-6 mm. long, acute, the venation obscure; peduncles at first slender, 1-1.5 cm. long, in fruit 3 cm. long, prickly; legume subterete, 7-8 cm. long, long-apiculate, prickly, glabrous.
Sabinas, Coahuila, May 21, 1902, Nelson 6830.

Leptoglottis potosina Britton & Rose, sp. nov
Roots thickened, in clusters; stems herbaceous, diffuse, 2-4 dm. long, slender, angled, pubescent, prickly. Stipules small, linear; petioles slender, prickly; pinnae 2 or 3 pairs; leaflets 6-8 pairs, 3-4 mm. long, puberulent, the veins indistinct; peduncles slender, 2-3 cm. long, prickly; flowers pinkish; legume slender, about 7 cm. long, 2 mm. thick, sparsely prickly, short-beaked, glabrous.
Minas de San Rafael, San Luis Potosi, May, 1911, Purpus 5177.

Leptoglottis berlandieri Britton, sp. nov
Schrankia aculcata var. (?) Benth. Trans. Linn. See. 30: 441.
Glabrous; stem slender, about 4 dm. long, or longer, sparsely armed with small reflexed prickles. Petioles very slender, 3 cm. long or shorter; pinnae 2 or 3 pairs; leaflets 4-7 pairs, oblong, 4-6 mm. long, about 2 mm. wide, faintly 1-nerved, obtuse, apiculate; legume narrowly linear, distantly short-prickly, compressed, 6-7 cm. long, about 3 mm. wide, its beak 4—6 mm. long.
Between Goliad and Bexar, Southern Texas, May, 1834, Berlandier 2513.
Schrankia elata Mart. & Gal. Bull. Acad. Brux. 10-: 309. 1843.
Stems 5-7 m. high, the twigs 5-angled, villous. Leaves short-petioled, very sensitive; pinnae 5 pairs; leaflets many pairs, oblong, mucronate, appressedvillous ; peduncles solitary or in pairs, villous, somewhat prickly.
Type locality: Banks of the Rio Grande in Western Oaxaca. Distribution: Known to us from description only.