Rhinotropis nitida (Brandegee) J. R. Abbott

Polygala nitida Brand. Univ. Calif. Publ Bot. 4: 272. 1912.
Fruticulose, branching, decumbent, finely incurved-puberulous, 9-20 cm. long; lower leaves elliptic to oval, 1-2 cm. long, 7.5-12.5 mm. wide, cuspidate at the rounded apex, cuneaterounded at base, reticulate, shining, glabrous or sparsely puberulous on costa beneath; the upper more oblong or obovate-oblong, 11-15 mm. long, 4-5 mm. wide; racemes 3-9-flowered, 1.5-3.5 cm. long, slightly geniculate; bracts persistent, lance-subulate, minute; flowers rosecolored; upper sepal ovate, ciliolate, persistent, 3 mm. long; lower sepals oblong, 2.6 mm. long; wings rose-colored, oblong-obovate, 5.5 mm. long, 3.3 mm. wide, acutish at the mucronulate apex, cuneate at base, glabrous; keel yellowish, 5.5 mm. long, the blunt slightly descending beak 1.5 mm. long; capsule oval, subretieulate'striate, sparsely puberulous, 4 mm. long, 2.7 mm. wide; seed pilosulous, 3 mm. long; aril 1.9-2.1 mm. deep, the small corneous umbo appressed, glabrous, the 2 corneous-scarious lobes narrowly oblong-obovate, rounded at apex, 1.8 mm. long.
Type locality: Bagre, Minas de San Rafael, San Luis Potosi. Distribution: Known only from the type locality.