POTATO FAMILY 663 



Corolla 2-3 cm. long; capsule circumscissile near apex; calyx-teeth pungent. 



Fruit a berry; corolla rotate, broadly campanulate, or urceolate. 



Anthers longitudinally dehiscent, not connivent, shorter than the filaments. 



Fruiting calyx enlarged, investing the berry; corolla rotate or broadly campanulate; berry 

 globose. 

 Corolla with tomentose pads alternating with the filaments; fruiting calyx herbaceous, 

 closely investing the berry but open above. 4. Chamaesaracha. 



Corolla lacking tomentose pads; fruiting calyx papery, nearly closed apically. 



5. Phy salts. 



Fruiting calvx not enlarged nor investing the berry; corolla urceolate; berry ohovoid or 

 ellipsoid. 6. Salpuhroa. 



Anthers opening by terminal pores, connivent, usually longer than the filaments. 



7. ^olanum. 



Corolla 5-20 cm. long, the limb 3-15 cm. broad; fruit falsely 4-celled, closely armed with heavy 

 prickles. «• i^a'«'''»- 



Seeds angulate or ovoid, not compressed, mostly less than 0.6 mm. in diameter; embryo straight or nearly so. 

 Flowers over 1 cm. long, racemose or paniculate, in ours white or yellow; plant erect or ascending. 



9. Ntcottana. 



Flowers 5-6 mm. long, solitary in the axils, purplish; plant prostrate or decumbent. 10. Petunia. 



1. LYCIUM L. Sp. PI. 191. 1753. 



Erect or spreading shrubs with glabrous or pubescent herbage and mostly armed 

 branches. Leaves often fasciculate, entire to minutely dentate, frequently mealy and 

 glandular. Flowers single or in few-flowered, axillary glomerules on short, straight or 

 reflexed pedicels. Calyx campanulate to tubular, commonly ruptured by the maturing 

 fruit. Corolla white or oftener suffused with lavender, purple or green, tubular to fun- 

 nelform, 4-7-lobed, glabrous or puberulent, especially on the margins of the lobes; 

 stamens 4-6, the filaments subequal to distinctly unequal, glabrous, pubescent or glandu- 

 lar near the base, attached to base of the corolla-tube; fruit fleshy or dry. Seeds mi- 

 nutely pitted. [Named for the ancient country Lycia, in Asia Minor.] 



A genus of about 90 to 100 species occurring chiefly in arid portions of all continents. Type species, Lyciuni 

 afrttm L. 



Fruit 2-seeded; leaves fleshy-turgid, nearly terete in cross section; corolla-tube about equaling the calyx. 



1. L. caltjornicum. 



Fruit several- to many-seeded; leaves flattened, subfleshy or nonfleshy, not terete in cross section; corolla-tube 

 2-5 times as long as the calyx. 

 Fruit fleshy, without lateral sutures; corolla-lobes not strongly revolute. 



Stamens inserted immediately below the sinuses between the corolla-lobes, filaments glabrous. 



2. L. verrucosum. 



Stamens inserted below middle of corolla-tube, the filaments pubescent at base. 



Corollas broadly funnelform, the limb as wide as the length of the tube; berries glaucous, often 



purplish. ^' ^- pallidum ohgospermum. 



Corollas narrowly funnelform or clavate-rotate, the limb rarely as broad as the length of the 

 tube; berries red or orange, not glaucous. 

 Calyx-lobes equaling or exceeding the calyx-tube; corolla-tube not over twice as long as the 

 calyx, including the calyx-lobes. 

 Corolla-tube 3-4 mm. in diameter at the throat; calyx-tube somewhat angled, the lobes 

 subequal or very unequal, triangular, lanceolate, or spatulate, acute. 



4. L. brevipes. 



Corolla-tube 1.5-2 mm. in diameter at the throat; calyx-tube not angled, the lobes equal, 

 narrowly ovate to elliptic, rounded. 5. L. Parishii. 



Calyx-lobes not over one-fourth as long as the calyx-tube; corolla-tube 3-8 times as long as the 

 calyx. 

 Leaves and calyces puberulent; calyx-tube cylindrical, 4-7 mm. long. 



6. L. Fretnontii. 



Leaves and calyces glabrous or glabrate; calyx-tube narrowly campanulate or cup-shaped, 

 2-4 mm. long. 

 Margins of corolla-lobes lanate-ciliate; leaves to 6 mm. wide; corolla-tube 1-1.5 mm. 



in diameter at mouth of calyx. 7. L. Torreyi. 



Margins of corolla-lobes glabrous; leaves 1-2 mm. or rarely 3 mm. wide; corolla-tube 

 less than 1 mm. in diameter at mouth of calyx. 



8. L. Andersonii. 



Fruit dry, with two lateral, transverse grooves above the middle; corolla-lobes strongly revolute. 



9. L. Cooperi. 



1. Lycium calif ornicum Nutt. California Desert Thorn or Lycium. Fig. 4464. 



Lycium californicutn Nutt. ex A. Gray, Bot. Calif. 1: 542. 1876. 



Lycium californicutn var. ariconicutn A. Gray, Syn. Fl. N. Amer. ed. 2. 2^: 437. 1886. 



Intricately branched, dense shrub to 2 m. tall ^fnth knotty, bluntly spine-tipped branches. 

 Leaves ovoid' to linear-terete, fleshy, 1-3 mm. wide, 2-12 mm. long, sessile or subsessile, gla- 

 brous or minutely puberulent when young; flowers borne singly on pedicels 1-5 mm. long; 

 calyx campanulate, about 2.5 mm. long, 2-4- or rarely 5-lobed, these triangular, minute; corolla 

 white suffused with purple, tube 2-3 mm. long, the lobes rotate or slightly reflexed, equaling 

 the tube; stamens 4, slightly exserted, the filaments adnate about to middle of corolla tube, 

 pubescent at base; fruit ovoid 2-6 mm. long, firm, reddish, 2-seeded. 



Dry bluffs and hillsides, mainlv Lfwer Sonoran Zone; Los Angeles County southward along the coast to 

 central Lower California, and from Cochise County, Arizona, interruptedly to Guaymas, Sonora. Type locality: 

 San Diego, California. Feb.-July. 



