C. fendleri var. venosus W. Trelease
C. fendleri var. viridis A. Gray
Stems: low-spreading to erect, not rooting at nodes; twigs greenish-brown, round, smooth, canescent, often glaucous, rigid, spinescent
Leaves: evergreen, alternate; not clustered;stipules thin, deciduous; petioles 2--4 mm; blades ovate to narrow elliptical,0.8--2.6(3.2) x 0.4--1.4 cm; bases cuneate to rounded, evenly 3-veined, margins not revolute, entire, rarely glandular-toothed near apex, tips acute to rounded, abaxially pale green, puberulent, especially along veins, adaxially dark green, appressed, silky hairs or nearly glabrous, plane.
Inflorescences: terminal or axillary, raceme-like cluster of sessile umbels, 0.9--3.9 cm.
Fruits: globose, 4--6 mm broad, roughened, horns 0; valves crests +/- minute.
Flowering: in early summer.
Habitat: open woods, dry hillsides, open valleys, usually rocky soil or ledges; 1600--2800 m.
Range: Ariz., Colo, N.Mex., S.Dak., Tex., Utah, Wyo; Mexico in Chihuahua, Coahila. View Distribution Map.
If you have any comments or information regarding this species, please send mail to Dr. Schmidt.