Hebecarpa greggii (S. Watson) J. R. Abbott

Polygala phoenicistes Blake, Contr. Gray Herb. 47: 55. 1916.
Stems several, fruticulose, subereet or diffuse, light-green, incurved-puberulous and glandular-punctate, 6-15 cm. long; leaves cuneate-obovate, 5.5-7 mm. long, 2.5-4.5 mm. wide, rounded at apex and mucronulate, cuneate at base, densely glandular-punctate, beneath along costa very sparsely incurved-puberulous, otherwise glabrous; racemes very short, 1 -flowered; flowers purple; sepals lanceolate, acuminate, sparsely ciliolate, otherwise glabrous, glandularpunctate, 2.5 mm. long, the upper one persistent; wings spatulate-obovate, obtuse, 6 mm. long, 2.5 mm. wide, long-cuneate at base, sparsely incurved-puberulous and ciliolate; keel 6 mm. long; capsule oblong-elliptic, rounded at base, 5 mm. long, 3 mm. wide, ciliolate, sparsely incurved-puberulous at base, on a stipe 2 mm. long; immature seed spreading-pilosulous, 4 mm. long; aril corneous, 3-lobed, 1-1.2 mm. high, the umbo large, sparsely pilose, the thinner lobes subequal.
Type locality': Sierra de Guascama. Minas de San Rafael, San Luis Potosi. Distribution: Known only from the type locality.