Caesalpinia platyloba S. Watson

Brasilettia blasiana (M. E. Jones) Britton
Caesalpinia blasiana M. E. Jones, Contr. West. Bot. IS: 141. 1929.
A shrub, with short, slender twigs densely puberulent when yoimg, soon glabrous. Rachis and petiole sparingly short-pubescent; pltmae 2 or 3 pairs; leaflets 4-6 pairs, oblong, 1.5-2.5 cm. long, 1-1.5 cm. wide, glabrous above, sparingly pubescent on the midvein beneath, the base narrowed, the apex rounded or obtuse, the petioles short but distinct; fruiting raceme shortpubescent, the pedicels 1.5-2 cm. long; legume 6-9 cm. long, 3-4 cm. wide, nearly glabrous when mature, its stout stipe about 4 mm. long.
Type uocality: San Bias, Sinaloa.
Distribution; Known only from the type locality.

Brasilettia pubescens Britton, sp. nov
Twigs densely puberulent; petioles and rachis densely short-pilose; [jinnae 2 or 3 pairs; leaflets 5-7 pairs, oblong, 2-4 cm. long, obtuse, rounded or acutish at the apex, obtuse or rounded at the base, pubescent on both sides or glabrate above, nearly sessile; young inflorescence densely puberulent, about 12 cm. long; pedicels 8-15 mm. long; calyx densely puberulent, the lacerate, lower lobe about 14 mm. long; legume oblong to elliptic, puberulent or glabrous, 7-1 1 cm. long, 3-4 cm. wide.
Sinaloa and Chihuahua. Type from vicinity of Guadalupe, Sinaloa, April 18, 1910, Rose, Siandley Sf Russell 14763.

Brasilettia platyloba (S. Wats.) Britton & Rose
Caesalpinia (?) platyloba S. Wats. Proc. Am. Acad. 21: 425. 1886.
A tree, 4 m. high or less, the twigs puberulent, the yoimg leaves densely pubescent. Pinnae 2-4 pairs; rachis loosely pilose or glabrous; leaflets 5-7 pairs, elliptic to oblong or ovate, obtuse, or acutish, 2-5 cm. long, sparingly pubescent; racemes about 5 cm. long; fruiting pedicels 12-15 mm. long; legume elliptic, 7-9 cm. long, 3-4 cm. wide, glabrous, 3-5-seeded, the stipe 1-2 mm. long.
Type locality: Hacienda San Miguel, near Batopilas, Chihuahua. Distribution: Chihuahua and Sinaloa.

Brasilettia pilosa Britton & Rose, sp. nov
Leaf-rachis loosely pilose. Pimiae 2 or 3 pairs, ovate to elliptic, obtuse or acutish, 3-6 cm. long, sparingly pubescent above, pilose beneath; fruiting pedicels about 1.5 cm. long; legume 10-12 cm. long, 2-3.5 cm. wide, densely velvety-pubescent, the stout stipe 10-13 mm. long.
Sinaloa. Type from Ymala, September 25 to October 8, 1891, £. Palmer 1682.