Plant: perennial herb, 1-4 dm tall, glabrous and glaucous

Leaves: opposite, ovate to broadly obovate, 35-95 mm long, 20-65 mm wide

INFLORESCENCE: axillary peduncles

Flowers: pedicels 5-25 mm long; calyx lobes linear-lanceolate, pilose, 5-11 mm long; corolla rose purple, 18-28 mm long

Fruit: a pair of follicles 5-10 cm long; SEEDS comose at the apex

Misc: Sandy flats to talus slopes in open pine forest, chaparral; 1200-2800 m.Mohave Co. (7). The Arizona plant is var.jonesii (Eastw.) S.L. Welsh & N.D. Atwood, known in Arizona from a single collection made in May 1944 from clay slopes near Pipe Springs at 4800 ft (1450 m) (W. P. Cottom 9346, UT!). This variety also occurs in Utah where it is rare; it appears to be an obligate gypsophile.

REFERENCES: McLaughlin, Steven, P. 1994. Apocynaceae. J. Ariz. - Nev. Acad. Sci. Volume 27, 164-168.