74 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
persistent style, 2:5 to 3.5 cm. long, 0.9 cm. broad, the vexillar suture thickened at 
the seed, concave, about 0.5 mm. broad. 
The type of this species, from Mexico, is in Pavon’s collections, in the Herbier 
Boissier. 
SPECIMENS EXAMINED: 
Mexico: Imala, Sinaloa, flowers, August, 1891, Palmer 1433; probably from the 
same locality, immature fruits, Palmer without number or data (U.S. National 
Herbarium, no. 305322). Between Rosario and Acaponeta, Sinaloa, flowers, 
July 28, 1897, Rose 1873. 
The number of leaflets is often 15 and the fruits on our specimens, though immature, 
are developed enough to show that this species belongs to the subgenus Neuroscapha, 
and not to the section Densiflori as suggested by Bentham. 
28. Lonchocarpus yucatanensis Pittier, sp. nov. FIGURE 24, 
Branchlets stout, gray, lenticellate, the younger parts pubescent. 
Leaves 5 or rarely 7-foliolate, the rachis slender, canaliculate, minutely pubescent, 
4to6cm.long. Leaflets membranous, the petiolules puberulous-tomentose, canalic- 
ulate, about 3 mm. long, the blades ovate-oblong or ovate- 
elliptic, cuneate at the base, obtuse or subemarginate at the 
apex, 3 to 6 cm. long, 1.3 to 2.5 cm. broad, reticulate on both 
faces, sparsely pilosulous or glabrous above except on theehairy 
costa and veins, paler and sparsely pilosulous beneath, the costa 
hairy and prominent. Stipules very small, ovate, pubescent, 
caducous. 
Racemes axillary, the rachis pubescent, about 7 cm. long. 
Peduncles and pedicels short, densely pubescent, the former 
usually biflorous, 1.5 mm. long or less, the latter 2 to 2.5 mm. 
Fie, 24,—Lonchocarpus Jong: bracts and bractlets ovate, pubescent, the latter a single 
yucatanensis. a, Stand- . . 
ard; b, wings; ¢, carinal P@ir close to the calyx. Calyx cupulate, slightly 5-toothed, 
petals; d,calyxandsta- nearly 3 mm. long, densely grayish-pubescent. Petals pinkish 
mens; ¢, pistil. Natu- or purplish; standard suborbicular, equally broad at base and 
rer From Gau- anex, concave, 2-lobulate and callous at the base, deeply emar- 
, ginate at the apex, sparsely pubescent on the back, pubescent 
inside above the small lobules, the lateral margins involute, the claw about 1 mm. 
long, the blade 8 mm. long, 7.5 mm. broad; wings adhering to the keel, very oblique, 
elongate, auriculate, obtuse at the apex, glabrous, the claw 2 to 2.5 mm. long, the 
blade 6.5 to 7 mm. long, 2 to 2.5 mm. broad; carinal petals often parted, obovate and 
subfalcate, obtuse, plicate longitudinally, slightly pubescent at the apex, the claw 
as in the wings, the blade about 6 mm. long and 2.5 to 2.7 mm. long. Anthers large, 
ovate-elliptic; vexillar stamen free at the base. Ovary linear, densely hairy, about 
5.5 mm. long, 7 to 9-ovulate; style glabrous, strongly arcuate. 
Legume not known. 
Type in the herbarium of the Field Museum of Natural History, no. 437778, col- 
lected at El Progreso, Yucatin, Mexico, by Dr. G. F. Gaumer (no. 1146). 
A near relative of L. atropurpureus, differing in the pubescence, in the smaller num- 
ber of leaflets, in the shape and size of the petals and of the anthers, in the curvature 
of the style, etc. 
29. Lonchocarpus orotinus Pittier, sp. nov. Puate 5, A. Ficure 25. 
A small tree, up to 8 meters high, the crown rounded, the branchlets brownish, 
densely lenticellate, at first sparsely pubescent. 
Leaves 7-foliolate, rarely 5 or 9-foliolate, the rachis slender, canaliculate, sparsely 
pilosulous, 3.5 to9cm.long. Leaflets membranous, the petiolules canaliculate, hairy, 
1.5 to 3 mm. long, the blades ovate-lanceolate or ovate-elliptic, attenuate and acute 
at the base, narrowly acuminate and subacute at the apex, 2 to7.5 cm. long, 1 to 2.5 cm. 
