Plant: perennial herb; 4-9 dm tall, pilose Leaves: lanceolate to linear-lanceolate, the lower ones 6-10 cm long, 11-17 mm broad, the upper ones 4-6 cm long, 3-8 mm broad Inflorescence: a terminal, compound cyme Flowers: calyx lobes subulate, 3-6 mm long; corolla tube 12-15 mm long, broadest below the apex, slightly constricted at the orifice, the lobes 2-4 mm long Fruit: slightly constricted between the seeds, 3-10 cm long. SEEDS cylindrical, corky, 8-11 mm long, 3-4 mm broad Misc: 1100 m (3600 ft) REFERENCES: McLaughlin, Steven, P. 1994. Apocynaceae. J. Ariz. – Nev. Acad. Sci. Volume 27, 164-168.