POTATO FAMILY 759 



campanulate, lurid-yellowish, piirplc-veincd, 2 cm. long. Waste places and 

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



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



Stramonium. 



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

 alternate, mostly lobed. Flowers perfect, regular, solitary in the axils. Calyx 

 prismatic-funnelform, 5-lobcd. Corolla funnelforni, plaited, 5-lobed; lubes 

 acuminate. Stamens 5, included, adnate to near the middle of the corolla-tuhe. 

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

 4-vaIved or splitting irregularly. 



Corolla 1.0-2 dm. long; capsule more or less fleshy, bursting irregularly. 



^ „ , , , , . , , 1. D. meteloidcs. 



Corolla about 1 dm. long; capsule dry. 4-valved. 



Capsule erect; plant glabrous. 



CoroUa white; lower prickles of the capsule shorter. 2. D. Stramonium. 



CoroUa violet; prickles aU alike. 3. D. Tatula. 



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, 4r-5 cm., densely short-prickl^^ reflexed in fruit. Along 

 streams: w Tex. — Colo. — Calif.; Mex. Son, — Subnwnt. Mr-0. 



2. p. Stramoniuni L. Annual; stems glabrous, 5-15 dm. high, widely 

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

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

 olate, 5-7 mm. long; corolla white, 6-10 cm. long; lobes with slender ti]:>s; capsule 

 4-6 cm. long, densely prickly. Waste places and cultivated ground: X.S.^Fla. 

 — Tex. — Colo.— Minn.; W. Ind. and S. -\m.; nat. from Asia. M^^-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.-7<;]alif. — Wash.; 

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



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

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

 about 5 cm. long; teeth lanceolate; corolla white, tinged with pur])le, 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. 



Leaves 



Annual or perennial, viscid-pubescent, narcotic herbs, 

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

 Cal^'x 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-cened, 

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



numerous. 



Corolla salverform; capsule 2-celled. ^ nr , • j. j, 



Leaves clasping at the base; flowers diurnal. A' ^r ^^}p^^^P^y^^' 



Leaves petioled, not clasping at the base; flowers noctumaL 2. N. attenuata. 



linn 



3. N. quadritalcis. 



1. N. trigonophylla DunaL Annuals; stem 3-10 dm. high, viscid-pubes- 

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

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



^^„:«,,l„j.«. ««1,r^_l^Krto oiiKiilofo_l.rin/.Qri]*:iff.' i^nrnllfi orrppnish whltC Or vellowish. 



2-2.5 cm. iong^ somewhat pubescent. Valleys: Tex.— s Colo.— s Utah— Calif 

 Mex. Son, Ap-S. 



