2I 8 SOLANACEAE. 



style 1 ; ovary entire, superior, 2-celled, becoming a many-seeded 

 capsule or berry; endosperm fleshy. 



Corolla rotate; fruit a berry. 325. Solanum, 218. 

 Corolla funnelform to salverform; fruit a capsule. 



Flowers solitary. 326. Datura, 218. 



Flowers in racemes or panicles. 327. Nicotiana, 219. 



325. SOLANUM. Nightshade. 



Herbs or shrubs; calyx and rotate corolla 5-parted or cleft, the 

 latter plaited in the bud; stamens epipetalous, exserted; fila- 

 ments very short; anthers converging; styles elongated; ovary 

 2-celled, rarely more; fruit a berry. 



Climbing shrub; flowers violet. S. dulcamara. 

 Annual herb. 



Flowers yellow; plant prickly. S. rostratum. 



Flowers white; plant not prickly. 5. nigrum. 



Solanum dulcamara L. Bittersweet. Perennial, half-shrubby, with 

 climbing or spreading branches, sometimes 1 m. or more long, pubescent or 

 glabrate; leaves ovate, acuminate, cordate, simple, 2-6 cm. long, or many of 

 them with 3 lobes or 3-divided at base, the lateral segments smaller; petiole 

 slender, shorter than the blades; cymes loose; flowers usually purple, 10-12 mm. 

 broad; corolla-lobes spreading, triangular, acuminate; berries subglobose, 

 red. Sparingly introduced. 



Solanum rostratum Dunal. Buffalo Bur. Very prickly yellowish herb 

 with an abundant stellate pubescence; leaves once or twice pinnatifid; calyx 

 densely prickly; corolla yellow; stamens and style much declined. Becoming 

 introduced in recent years. 



Solanum nigrum L. Annual, glabrous or somewhat pubescent, usually 

 branched, 15-30 cm. high; leaves ovate or triangular, acute or obtuse, cuneate 

 at base, sinuately toothed or rarely entire, 1-4 cm. long; petioles shorter than 

 the blades; flowers in lateral peduncled small cymes; calyx-lobes obtuse; 

 corolla white, deeply 5-cleft, the lobes spreading; berries globose, black. In 

 cultivated soil, along Snake River. 



326. DATURA. 



Rank narcotic-poisonous annual or perennial weeds, erect, 

 tall, branching; leaves alternate, petioled, ovate; flowers large, 

 showy, solitary, on short peduncles, in the forks of the stems; 

 calyx prismatic, 5-toothed, deciduous; corolla funnelform, with 

 a 5-10-toothed plaited border; fruit a globular prickly 4-valved 

 2-celled capsule; seeds rather large, flat. 



Flowers white; prickles of the fruit unequal, the lower shorter. D. stramonium. 

 Flowers pale-violet; prickles of the fruit equal. D. tatula. 



Datura stramonium L. Jamestown or Jimson Weed. Annual, glabrous or 

 nearly so, green, 30-90 cm. high; leaves ovate, acuminate or acute, coarsely 

 toothed or lobed, usually narrowed at base, petioled, 6-20 cm. long; calyx-tube 



