DICOTYLEDONS. 207 



L. Lycopersicon (L.) Karst, Tomato. Stem diffusely branched 

 and becoming decumbent, furrowed and angled below, viscid-pubes- 

 cent, 0-5 ft. long ; leaves irregularly lobed and pinnatiiid, petioled ; 

 calyx lobes linear, about as long as the yellow corolla ; fruit (in the 

 wild state) globose or ovoid, red or yellow, i-i in. in diameter, but 

 greatly enlarged in cultivation. May-September. Common in cul- 

 tivation and often spontaneous. 



IV. LYCIUM. 



Shrubs or woody vines, often spiny ; leaves entire, alter- 

 nate, often fascicled ; flowers solitary or clustered, terminal 

 or axillary ; calyx persistent. 4-5-lobed or toothed, not en- 

 larged in fruit ; corolla funnel-form or campanulate, the limb 

 4-5-lobed, the lobes obtuse ; stamens 4-5, exserted ; ovary 

 2-celled, style single, stigma obtuse ; fruit a many-seeded 

 berry. 



L. vuLGARE (Ait.) Dunal. ^Matrimony Vine. Stem slender, 

 branching, twining or trailing, 6-15 ft. long; branches angled, 

 spiny; leaves elliptical, smooth, entire, sessile or short-petioled ; flow- 

 ers solitary or few in the axils; peduncles long and slender; corolla 

 spreading, greenish-purple, ^-^ in. wide; berry oval, orange-red. 

 April-July. Introduced from Africa, and often planted for covering 

 trellises. 



V. DATURA. 



Annual or perennial, strong-scented herbs ; stems tall and 

 branching ; leaves petioled, entire or lobed ; flowers large, 

 solitary in the forks of the branches ; calyx tubular, 5-tootlied 

 or lobed, the upper part deciduous, the lower persistent ; 

 corolla funnel-form, 5-angled, plaited, convolute in the bud ; 

 stainens 5, inserted in tlie corolla tube ; ovary U-celled or 

 imperfectly 4-celled, style filiform, stigma 2-lobed ; fruit a 

 spiny, 4-valved, many-seeded capsule. 



1. 1). S'n:.\M<»MrM L. Jnrsox-wr.r.D. Annual; stem smooth, 

 gVeen, stout, forking aliovc, 1-1 ft. higli ; Icavt's ovate to oblong-ovate, 

 acute at tlie apex, narrowed at tlic ba.se, sin uate-tootlied. ju'tioled ; 

 calyx .Vangled ; corolla white, about 1 in. long; capsule ovoid, en*ct, 

 2 in. long. May-October, .\ common weed; poisonous. 



2. 1). Tatul.\ L. Pi'Hi'i.K JiMsox-wKKi). Annual; stem erect, 

 rather slender, slightly pubescent, purplish, 'J—") ft. high ; leaves 



