254 xci. solanace^e (wright). [Lycium. 



and hairy at the base ; anthers short, cells parallel, dehiscing longi- 

 tudinally. Disk annular or cupular. Ovary 2-celled ; ovules many. 

 Berry globose, ovoid or conical, rather fleshy ; pericarp thin or fleshy. 

 Seeds many, rarely few or solitary, compressed ; testa crustaceous, 

 pitted ; embryo much curved, near the circumference ; cotyledons 

 semiterete. — Trees or shrubs, ultimate branchlets often spiny, glabrous 

 or pubescent. Leaves entire, linear to lanceolate, subterete or flat, 

 often in fascicles on rudimentary branchlets. Flowers usually solitary. 

 Species about 50, in temperate and warm regions throughout the world ; very 

 common in extra-tropical South America. 

 Flowers 5-merous. 



Filaments glabrous . . . . . . . 1. L. persieum. 



Filaments hairy at the base . . . . . 2. L. decumbens. 



Flowers 4-merous . . . . . . 3. L. arenicolum. 



1. L. persieum, liters in Ann. & Mag. Nat. Hist. ser. 2, xiv. 

 (1854) 12. Branches slender, glabrous or ashy pubescent, spines 

 straight. Leaves spathulate-obovate or oblong, glabrous or puberulous, 

 |— § in. long, J?- 2 lin. wide ; petiole up to 2 lin. long. Flowers solitary ; 

 peduncle up to J in. long. Calyx shortly tubular, 2 lin. long, including 

 the ^ lin: long triangular lobes, ciliate. Corolla blue-purple ; tube § in. 

 long, cylindrical in the lower quarter, then gradually widening upwards ; 

 lobes 5, oval, obtuse, ciliate, 1 lin. long. Stamens 5, unequal, inserted 

 about the middle of the corolla-tube, included ; filaments glabrous ; 

 anthers \ lin. long, shortly apiculate. Ovary globose. — Boselli in Ann. 

 Istit. Bot. Roma, viii. 237 ; var. scevum, Vatke in Linnaea, xliii. 333. 

 L. mediterraneum, vars. cinereum, cinnamomeum and leucocladum, Dunal 

 in DC. Prodr. xiii. i. 524-525 ; Schweinf. in Yerh. Zool.-Bot. Ges. 

 Wien, xv. (1865) 551. L, arabicum, Schweinf. ex Boiss. Fl. Orient, iv. 

 289. L. europceum, Th. Anders. Florula Aden. 26, not of Linn. 

 L. erythrceum, Schweinf. ex Vatke. 



Tffile Land. Nubia: Wadi Uarag, Schweinfurth, 37! Wadi Rischrasch, 

 Schweinfurth, 13 ! Wadi Abu Hamad, Schweinfurth, 229 ! coast region, Bent ! 

 Lord! Makaur (Macowa) Island, Schweinfurtli, 1399! Eritrea: Erkowit 

 Mountain, Schweinfurth, 251! Isola Sarad, Terracciano, 288; Dasycli-Nocra, 

 Terracciano, 280. Somaliland : Harradigit, James Sf Thrupp ! Uganda : Kedong 

 Valley, 6000-7000 ft., Scott-Elliot, 6610 ! British East Africa : Tula River, 

 Kirk J 



Also in Egypt and Arabia. 



2. la. decumbens, Welw. ex Iliern in Cat. Afr. PI. Welw. i. 752. 

 A glabre-cent shrub, 1-1^ ft. high. Stems rather thick, prostrate, 

 nodose, intricately branched, spiny ; branches rigid, mostly divaricate ; 

 spines whitish, very rigid, acute, patent, -J— J in. long. Leaves alternate, 

 and fascicled, oblanceolate, rounded at the apex, wedge-shaped at the 

 sessile or subsessile base, fleshy, glandular-squamulose at least beneath, 

 glaucescent, tj—f in. long, about 1 lin. broad, flat, entire. Flowers 

 axillary, solitary, 5 lin. long ; peduncle nearly ^ in. long. Calyx 

 campanulate, 2J- lin. long, pale green, shortly trifid, glandular- 

 squamulose outside ; lobes more or less broadly ovate, obtuse, shortly 



