POTATO FAMILY 759 



campanulate, lurid-yellowish, purple-veined, 2 cm. long. Waste places and 

 around dwellings: N.S. — N.Y.— Colo. — Mont.; nat. from Eu. My-S. 



9. DATURA L. Thorn Apple, Jimson Weed, Jamestown Weed, 

 Sth-ajvionium. 



Annual or perennial herbs, or in the tropics shrubs or trees, narcotic. Leaves 

 alternate, mostly lobed. Flowers perfect, regular, solitary in the axils. Cah^x 

 prismatic-funnelform, 5-lobed. Corolla funnelform, plaited, 5-lobed; lobes 

 aciuninate. Stamens 5, included, adnate to near the middle of the corolla-tube. 

 Ovary 2-celled or falsely 4-celled; stigma 2-lobed. Capsule more or less prickly, 

 4-valved or splitting irregularlj'. 



Corolla 1..5-2 dm. long; capsule more or less fleshy, bursting irregularly. 



1. D. meteloides. 

 CoroUa about 1 dm. long; capsule dry, 4-valved. 

 Capsule erect; plant glabrous. 



Corolla wliite; lower prickles of the capsule shorter. 2. D. Stramonium. 



Corolla violet; prickles all ahke. 3. D. Talula. 



Capsule nodding; plant more or less cinereous. 4. D. discolor. 



1. D. meteloides DC. Annual or perennial; stem erect, 3-10 dm. high, 

 finely grayish puberulent; leaves obliquely ovate, grayish puberulent, repand or 

 nearly entire, 10-15 cm. long; calyx 10-12 cm. long; lobes lanceolate, acuminate; 

 corolla white, often tinged with violet, 15-20 cm. long; lobes with slender tips; 

 capsules subglobose, 4—5 cm., densely short-prickh', reflexed in fruit. Along 

 streams: w Tex. — Colo. — Cahf. ; Mex. Son. — Submont. Mr-0. 



2. D. Stramonium L. Annual; stems glabrous, 5-15 dm. high, widely 

 brandling; leaf -blades ovate to oblong, glabrous, 1-2 dm. long, acute, sinuately 

 or laciniately toothed; calyx 3-5 cm. long; lobes triangular or triangular-lance- 

 olate, 5-7 mm. long; corolla white, 6-10 cm. long; lobes with slender tips; capsule 

 4-6 cm. long, densely prickly. Waste places and cidtivated ground: N.S. — Fla. 

 — Tex. — Colo. — Minn.; W. Ind. and S. Am.; nat. from Asia. My-D. 



3. D. Tatula L. Annual; stem 5-15 dm. high, glabrous, purplish, branched; 

 leaf -blades ovate to oblong, sinuately or angulately toothed, glabrous; calyx 3-6 

 cm. long; lobes triangular-lanceolate, 4-7 mm. long; corolla violet or lavender, 

 8-11 cm. long; lobes with slender tips; capsule oval or ovoid, 4-6 cm. long, densely 

 prickly. Waste places and fields: Conn. — Fla. — Tex.— Colo. — Calif. — Wash.; 

 W. Ind. and Mex.; nat. from S. Am. Je-0. 



4. D. discolor Bernh. Annual; stem puberulent, 3-6 dm. high; leaves 

 sinuatelj^ or laciniately toothed, 5-15 cm. long, more or less puberulent; calyx 

 about 5 cm. long; teeth lanceolate; corolla white, tinged with purple, 5-7 cm. 

 long; capsule globose, with rather few, very stout prickles, pubescent. Valleys: 

 N.M.— Colo.— s Calif.; Mex. Son. Ja-S. 



10. NICOTIANA (Tourn.) L. Tobacco. 



Annual or perennial, viscid-pubescent, narcotic herbs. Leaves alternate, 

 entire or repand. Flowers perfect, regular, in terminal racemes or panicles. 

 CaljTC campanulate or tubular-ovoid, 5-lobed. Corolla funnelform, salverform, 

 or nearly tubular; lobes 5, spreading. Stamens 5, included; filaments adnate to 

 the base of the corolla-tube or free; anthers opening lengthwise. Ovary 2-celled, 

 rarely 4-celled; stigma capitate. Fruit a 2- or rarely 4-valved capsule. Seeds 

 numerous. 



Corolla salverform; capsule 2-celled. 



Leaves clasping at the ba.se; flowers diurnal. 1. N. trigonophylla. 



Leaves petioled, not clasping at the base; flowers nocturnal. 2. N. attenuala. 



CoroUa fmmelform; capsule 4-celled; leaves acute at both ends. 3. N. quadricalvis. 



1. N. trigonophylla Dunal. Annuals: stem 3-10 dm. high, viscid-pubes- 

 cent; leaves all sessile or the lower with winged petioles, obovate-oblong, 5-15 

 cm. long, entire, the upper lanceolate, cordately half -clasping; inflorescence 

 paniculate; calyx-lobes subulate-lanceolate; corolla greenish white or yellowish, 

 2-2.5 cm. long, somewhat pubescent. Valleys: Tex. — s Colo. — s Utah — Calif.; 

 Mex. Son. Ap-S. 



