POTATO FAMILY 667 



2-7 mm. broad, 1-2.5 cm. long, finally glabrate; pedicels slender, 4-25 mm. long; calyx-tube 

 cylindric, 4-7 mm. long, the lobes mostly triangular, 1-2 mm. long; corolla 10-15 mm. long, 

 2-4 mm. in diameter at the throat, the lobes spreading, 1.5-4 mm. long; stamens rarely equal- 

 ing corolla-lobes ; fruit ovoid, 5-10 mm. long. 



Along arroyos and on desert flats and slopes, Lower Sonoran Zone; eastern San Diego County into south- 

 ern Ari7ona, and southward to southern Lower California and central Sonora. Type locality: "Interior of 

 California or country east of it." March-April. 



7. Lycium Torreyi A. Gray. Squawthorn or Torrey's Desert Thorn, Fig. 4470. 



Lycium Torreyi A. Gray, Proc. Amer. Acad. 6: 47. 1862. 



Lycium Torreyi var. filiforme M. E. Jones, Proc. Calif. Acad. II. 5: 714. 1895. 



Spreading, intricately branched shrub 1-3.5 m. tall, with heavy spines 5-12 mm. long, and 

 dense, puberulent to glabrate foliage and calyces. Leaves broadly spatulate, 3-10 mm. broad, 

 1-5 cm. long, gradually narrowing to a petiole 2-3 mm. long ; calyx cup-shaped to short-cylin- 

 drical, 2.5-4.5 mm. long, the 5 lobes 0.5-2.5 mm. long, subequal, their margins ciliolate; corolla 

 10-15 mm. long, the tube narrowly obconic, 3-4 mm. in diameter at the throat ; corolla-lobes 

 ovate to lanceolate, 3-4 mm. long, the margins lanate-ciliate ; stamens about equaling the 

 corolla-lobes ; fruit bright red, ovoid, 8-12 mm. long. 



Desert areas. Lower Sonoran Zone; Colorado and Mojave Deserts, California, to southern Nevada, south- 

 western Utah, Texas, and Chihuahua, Hidalgo, and Sonora. Type locality: Fort Yuma, California. March-May. 



8. Lycium Andersonii A. Gray. Water Jacket or Anderson's Desert Thorn. 



Fig. 447 L 



Lycium Andersonii A. Gray, Proc. Amer. Acad. 7: 388. 1868. 



Lycium Andersonii var. pubescens S. Wats. Proc. Amer. Acad. 24: 65. 1889. 



Straggly, much-branched, rounded shrub to 3 m. tall with glabrous, or rarely puberulent 

 herbage. Leaves linear-terete to narrowly oblanceolate, succulent, 1-3 mm. broad, 3-15 mm. 

 long, gradually attenuate toward the base ; flowers slender, whitish suffused with lavender ; 

 calyx minute, cup-shaped, the tube 1-2 mm. long, glabrous, the teeth about one-fourth as long as 

 the tube, triangular, sparsely ciliate marginally; corolla-tube 10-16 mm. long, 1-1.5 mm. in 

 diameter at the base, 2-3 mm. broad at the throat, lobes 4-5, 1.5-2.5 mm. long, entire, fimbriate 

 or ciliolate ; stamens exserted 2-3 mm. ; fruit ovoid to ellipsoid, bright red, 4-8 mm. long. 



Arid slopes, banks of arroyos, and desert flats, mainly Lower Sonoran Zone; coastal Los Angeles and San 

 Diego counties, California, to New Mexico, central Utah, and southward into Sinaloa and Lower California. 

 Type locality: southeastern Nevada. March-May. 



Lycium Andersonii var. deserticola (C. L. Hitchcock) Jepson, Fl. Calif. 3: 461. 1943. {Lycium Andersonii 

 f. deserticola C. L. Hitchcock, Ann. Mo. Bot. Gard. 19: 280. 1932.) Leaves plane or nearly so, 2-3.5 cm. 

 long; otherwise as in the species. Colorado Desert, California and .idjacent Arizona; and in Inyo, Kern, and San 

 Bernardino Counties, California. Type locality: Palm Springs, Riverside County, California. 



9. Lycium Cooperi A. Gray. Peach Thorn or Cooper's Desert Thorn. Fig. 4472. 



Lycium Cooperi A. Gray, Proc. Amer. Acad. 7: 388. 1868. 



Lycium Cooperi var. pubiflora A. Gray, Syn. Fl. N. Amer. ed. 2. 2^: 238. 1886. 



Lycium Shockleyi A. Gray, Proc. Amer. Acad. 22: 311. 1887. 



A compact, spiny, very leafy stout shrub, 0.6-3.5 m. tall with minutely glandular-puberu- 

 lent young twigs, leaves and calyces. Leaves oblanceolate to spatulate, 4-10 mm. broad, 1-3 cm. 

 long, glabrate in age ; flowers numerous, pendent beneath the branches ; calyx-tube bowl-shaped 

 to shallowly cylindrical, 4-5 mm. long in flower, to 8 mm. deep and expanded in fruit, the lobes 

 one-half as long as to equaling the tube, erect at first but later rotately spreading; corolla 

 greenish white, broadly funnelform to nearly cylindrical, the tube 10-18 mm. long, glabrous 

 to pubescent outside, persistent some time after anthesis, the lobes 2.5-4.5 mm. long, rotate or 

 reflexed, strongly revolute ; stamens about equaling the corolla-tube, subequal, hispid below ; 

 fruit ovoid, greenish yellow, becoming dry, 6-10 mm. long, with a horizontal-lateral constric- 

 tion of each locule between the middle and the apex, 1-2 seeds in each upper portion, several 

 in the lower one of each locule. 



Desert mesas, arroyos, and slopes. Lower Sonoran Zone; Mojave and Colorado Deserts, and the San Joaquin 

 Valley in Kern County, California, to southwestern Utah, and western Arizona. Type locality: eastern slopes 

 of the Providence Mountains, San Bernardino County, California. March-April. 



Lycium chininse Mill. Gard. Diet. ed. 8. no. 5. 1768. Scrambling, thorny shrub with straggling branches 

 1-2.5 m. long; leaves rhombic-ovate, 1-3.5 cm. long; calyx cup-shaped, the tube 2-3 mm. long, glabrous, 

 strongly veined; corolla funnelform-campanulate, the tube 5-8 mm. long, the lobes purplish, broadly ovate, 

 nearly equaling the tube; stamens about equaling the corolla-lobes; fruit bright red, ovoid, 6-10 mm. long. 

 Adventive in the bottom lands along the Lower Sacramento River. 



Lycium halimifolium Mill. Gard. Diet. ed. 8. no. 6. 1768. {Lycium vulgare [Ait.] Dunal in A. DC. Prod. 

 IB'^: 509. 1852.) A sparingly spiny shrub with recumbent to scrambling branches 1-6 m. long; leaves ovate 

 to spatulate, 2-6 cm. long, glabrous; calyx usually 5-lobed, about 2.5 mm. long; corolla rotate-campanulate, the 

 tube 3-7 mm. long, the 4-5 lobes from one-third as long to nearly equaling the tube, strongly spreading to 

 recurved; stamens exserted 3-5 mm.; fruit salmon-red, 8-10 mm. long. Adventive at scattered localities from 

 the vicinity of Salem, Oregon, to Santa Clara and Amador Counties, California. Also in Nevada and Utah. 



2. ORYCTES S. Wats. Bot. King Expl. 274. 1871. 



Low erect annual with sparsely scurfy foliage. Flowers pedicellate, in few-flowered, 

 axillary umbels. Calyx-lobes 5, narrow. Corolla yellow or brownish, tinged with blue 



