48 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Nissolia montana Rose, sp. nov.¢ 
Stems climbing, puberulent; leaflets 5, orbicular to oblong, rounded at both ends, 
with slender apiculation, 2 to 4 em. long, glabrous except in very young leaves; flow- 
ers numerous in the axils of the leaves, yellow or greenish; calyx glabrous, 3 to 4 
mm. long, rather broad, glabrous without, green; tube truncate between the linear 
sepals (shorter than the tube); corolla pubescent without, 10 mm. long; immature 
pods acutish, pubescent. 
Collected by C. G. Pringle on mountains near Iguala, Guerrero, October 24, 1900, 
(no, 9259). 
This species is perhaps nearest .V. mu/tiflora Rose, but has different pubescence, 
larger and differently shaped leaflets, calyx, fruit, ete. 
Phaseolus (Drepanosporon) oaxacanus Rose, sp. noy. Puiare IX. 
A slender vine, glabrous or nearly so; stipules ovate, obtusish, striate; petioles 
slender; leaflets triangular, acute and apiculate, nearly truncate at base, thin, dark 
green above; petioles hairy; stipels acute; flowering peduncles 1.2 to 1.9 din. long, 
much longer than the leaves; bracts ovate, acuminate and acute, cither with a lat- 
eral tooth on either side or 3-lobed; flowering pedicels slender, 4 to 6 mm, long; 
bracts at base of calyx minute; calyx tube 2 mm. high, rather broad, glabrous or 
nearly so without; 3 lower lobes nearly equal, obtuse, small; upper lobe truncate; 
corolla purple (2), 6mm. long. 
Collected by Mr. C. G. Pringle on the Sierra de San Filipe, altitude 2,500 meters, 
August 24, 1894 (no. O814a). 
EXPLANATION OF PLATE IN.—Fig. a, plant; b, calyx; ¢, banner; 7, wing, e, keel: f, stamens; y, style, 
Fig. a, natural size; the others, scale of 2. 
Phaseolus (Macroptilium) pedatus Rose sp. noy. PLATE X. 
Stems 2 to4 dm. long (2), from small oblong tubers (2 em, long), slender and creep- 
ing, with spreading pubescence; leaflets 8, the lateral ones deeply parted, giving the 
leaf the appearance of having 5 linear leaflets, glabrous or with short appressed hairs 
above, the margins involute, midnerve prominent beneath and hairy; raceme includ- 
ing the pedunele filiform and elongated, 1 dm. or less long, few-flowered; flowers in 
pairs, subsessile; bractlets at base of calyx minute; sepals 5, nearly equal, ovate, 
acuminate, shorter than the calyx tube (1.5 mm. long), ciliate; corolla purplish; 
wings erect, much longer than the keel and banner, 8 to 9 mm. long, t apering at base 
into an elongated filiform claw; banner nearly obicular, 5 mm. in diameter; keel 
forming a single coil; free stamen thickened above the base; style flattened, hairy 
below the stigma; stigma capitate; disk at base of pistil toothed; ovary 1 or 2 ovuled; 
immature pods short, densely sericeous, 1 to 2 seeded. 
Collected by C. G. Pringle, on damp sandy soil, Iguala, Guerrero, altitude 720 
meters; October 25, 1900 (no, 8567). 
This species, while clearly belonging to the section Macroptilium, is very unlike 
any species which I am familiar with.» 
EXPLANATION OF PLATE X.—Fig. a, plant; b, calyx; ¢, banner, d, wing; e, keel, fand y, stamens, 
hh, ovary, 7, seed. Fig. a, natural size; b, scale of 4; ¢ and d, scale of 2, e-i, scale of 4. 
Rhynchosia australis Rose, sp. nov. 
Stems climbing; leaflets 3, ovate-lanceolate, acuminate and acute, sometimes 7 to 
10 em. long, thinnish in texture; racemes much longer than the leaves, 15 to 20 cm. 
long; corolla yellowish; calyx 14 to 15mm, long; sepals slender, nearly equal; fruit 
not seen. 
Collected by Mr. C. G. Pringle in a mountain canyon near Cuernavaca, Morelos, 
February 15, 1899 (No. 7865). 
A species near R. macrocarpa Benth., but with thinner, less pubescent, and more 
acuminate leaflets, larger caly a ete. 
uF or a synoptic al treatment ot the Mexican species of Nissolia, see Rose, Contr. 
Nat. Herb. vol. 5, p. 157. 
