Lycium torreyi
Lycium cooperi
squaw desert-thorn, squawthorn, Torrey wolfberry, Torrey's box thorn, Torrey's wolfberry
Cooper wolfberry, Cooper's box thorn, Cooper's desert-thorn, peach thorn
blade spatulate to obovate, 10–50 × 1.5–15 mm, ± fleshy, surfaces glabrous.
blade spatulate to oblanceolate, 10–35 × 2–23 mm, surfaces usually densely glandular-pubescent.
2–8-flowered fascicles or solitary flowers.
2–3-flowered fascicles or solitary flowers.
5–20 mm.
2–8 mm.
(4–)5-merous;
calyx cupulate to tubular, 2.5–6 mm, lobe lengths 0.25-0.5 times tube;
corolla white to greenish lavender, narrowly tubular, 5–15 mm, lobes spreading, 1–4 mm, margins densely ciliate-lanate;
stamens slightly exserted.
(4–)5-merous;
calyx narrowly campanulate, 4–14 mm, lobe lengths 0.5–1 times tube;
corolla white or greenish yellow, sometimes purple-veined, tubular to funnelform, 8–15 mm, lobes 1.5–3 mm;
stamens included to exserted.
orange to red, ovoid, 6–12 mm, fleshy.
greenish yellow to orange, ovoid, constricted at or distal to middle, 5–10 mm, dry, hard, strongly accrescent calyx usually rupturing with fruit growth.
8–30.
6–10.
= 24.
= 24.
Lycium torreyi
Lycium cooperi
In the flora area, Lycium torreyi occurs in Arizona, southeastern California, eastern Nevada (Clark and Lincoln counties), western New Mexico, western Texas, and southern Utah. It can be distinguished from L. andersonii by its densely ciliate-lanate corolla lobes, and the mouth of the corolla is not quite as narrow. Further, L. torreyi usually occurs by streams or canals, with branches more cascading than upright. C. L. Hitchcock (1932) reported the fruits to be juicy and sweet.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Lycium cooperi occurs in western Arizona, southeastern California, southern Nevada (Clark and Esmeralda counties), and southwestern Utah (Washington County). It can be distinguished from the similar species L. pallidum and L. shockleyi by its dense, glandular pubescence and hard, constricted fruit.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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