Brongniartia lunata Rose

Brongniartia lunata Rose, Contr. U. S. Nat Herb. 5: 194. 1899.
A low shrub; young branches slender, short-villous with spreading hairs; leaves 15-20 cm. long; stipules broadly semicordate, somewhat lunate, acute at the apex; petiole 3-5 cm. long, as well as the rachis short-villous; leaflets 7—11, broadly oblong or oval, 4-5 cm. long, 2-3 cm. wide, rounded at the base, rounded to acutish and apiculate at the apex, short-strigose, becoming glabrous above, sparingly appressed-silky and reticulate beneath; flowers mostly
2 in each axil; pedicels 2.5-3 cm. long, glabrous; bractlets rudimentary; calyx glabrous, 15 mm. long, distinctly 2-lipped, sometimes only 4-lobed, the upper 2 lobes united three-fourths their length, the lower 3 or 2 united one-half to twothirds their length, all lance-ovate, acute; corolla 25 mm. long, rose-colored; pod unknown.
Type locality: East of Huasemote, Durango. Distribution: Known only from the type locality.