Polygala watsoni

Polygala watsoni Chod. Mem. Soc. Phvs Geneve 31(2) 2 : 285. 1893.
Polygala acicularis S. Wats. Proc Am. Acad. 21: 445. 1886. Not P. acicularis Oliver, 1868.
Stems numerous, branched, ascending from a thick woody base, 3.5 dm. long or less, finely incurved-puberulous; leaves crowded, linear-acicular, 4-1 1 mm. long, 0.4-0.6 mm. wide, acuminate at each end, mucronate, glabrous, flattish above, strongly 2-sulcate beneath; racemes about 10-flowered, 8-10 mm. thick, 6-11 mm. long; flowers white with pale veins; sepals oblong, abruptly acutish, denticulate above, glabrous, 2 mm. long; wings obovate, 5 mm. long, 1.8 mm. wide, cuneate at base, mucronate at the obtuse apex, 3-sub-5-nerved; keel 3.5 mm. long, the crest of 2 lobes on each side; capsule elliptic, narrow-margined on both cells, 3 mm. long, 2 mm. wide, both cells dehiscent; seed cylindric, curved, 2.6 mm. long; aril 1.8 mm. long, the 2 linear scarious lobes appressed.
Type locality: Santa Eulalia Mountains, Chihuahua.
Distribution: Known only from the type locality.