Purshia plicata (D. Don) J. Henrickson

Cowania plicata D. Don; Sweet, Brit. Fl. Gard. II. pi 400. 1838
Cowania purpurea Zucc. Abh. Akad. Munch. 4 2 : 7. 1845.
Greggia rupestris Engelm. in Wisliz. Tour. Northern Mex. 114. 1848.
Greggia purpurea Engelm.; Hemsl. Biol. Centr. Am. Bot. 1: 374. 1880.
Shrub 5-20 dm. high, with brownish more or less glandular branches, white-tomentose when young; leaf-blades obovate-spatulate, 6-20 mm. long, dentate, somewhat revolute on the margins, glandular above, especially on the margins and veins, white-tomentose beneath; stipules adnate to the short petioles, the free tips subulate; flowers terminal, solitary; pedicels 2-5 mm. long, densely glandular; hypanthium campanulate, 4-5 mm. long, glandular; sepals imbricate, ovate, 5-6 mm. long, somewhat tomentose and glandular on the back, abruptly acuminate, the inner more or less scarious-margined; petals purple or rose, broadly obovate, rounded or retuse at the apex, imbricate, 10-12 mm. long; stamens numerous in several series; pistils 6-10, distinct; body of the achenes silkyvillous, 6-7 mm. long; style in fruit about 4 mm. long; glabrous tips about 1 mm. long.
Type locality: Raised from seeds from the uplands of Mexico. Distribution: Northern Mexico.