PLANT: Shrub 1–4 m tall, openly branched, sparingly armed, the branches rigid, densely pubescent when young, the bark dark gray or brown to reddish brown. LEAVES: spatulate to obovate, 5–25 mm long, 3–8 mm wide, obtuse or rounded at the apex, rarely acute, densely glandular-pubescent, attenuate to a petiole 3–5 mm long, densely glandularpuberulent. FLOWERS: pendant, single or in groups of 2–3 (Fig. 2A); pedicels 3–6 mm long; calyx tubular-campanulate, 2.5–6 mm long, densely pubescent; lobes 5, 1/4 to 1/2 the length of the tube, equal, or the calyx irregularly lobed and more or less two-lipped, then some lobes as long as the tube; corolla funnelform, slightly narrowed just above ovary, 7–14 mm long, whitish, greenish, or tinged with purple and brown, glabrous externally; lobes 5, broadly ovate or obovate, pale lavender, spreading, 1–2 mm long, with sparsely ciliolate or glabrous edges; stamens 5, subequa1, from slightly to 2–3 mm exserted from the corolla-tube; filaments adnate to a point between a little below the middle of the corolla-tube, densely pilose on the 20 CANOTIA Vol. 5 (1) 2009 lower 2/3 of their free portion; corolla-tube densely hairy from the base to the point of adnation of the filaments, then less densely hairy up to the point where the filaments cease to be hairy; anthers 1–2 mm long; style usually slightly shorter than the stamens, and only slightly exserted but sometimes long-exserted. NOTES: Upper Sonoran Desert in AZ, in washes and on mountain slopes: Coconino, Gila, Graham, La Paz, Maricopa, Mohave, Pima, Pinal, Santa Cruz, Yavapai cos. (Fig. 1D); 300–1400 m (1000–4600 ft); Jan–Apr; s to Baja C. Sur, Son., and Sin., Mex. The distinction between Lycium exsertum and L. fremontii is usually not difficult in living plants but often so with dried specimens as habitat and flower color are important. The species are compared directly in lead 9 of the key. REFERENCES: Windham, M.D. And G. Yatskievych. 2009. Vascular Plants of Arizona: Isoëtaceae. CANOTIA 5 (1): 27–29, 2009.