544 SOLANACE^E. Datura. 



1. Calyx-tiihe prismatic, acutely 5 -angled : border of the corolla with 5 acute teeth: 

 capsule dry and of firm texture, ^-valved from the top : seeds with a thick and 

 rough dark-colored coat : root annual. 



* Capsule erect as well as the flower. 



1. D. Stramonium, Linn. (COMMON STRAMONIUM.) Smooth, green, 2 or 3 feet 

 high : leaves sinuately and laciniately angled and toothed : corolla white, about 

 3 inches long : capsule thickly beset with short and stout prickles, the lower ones 

 commonly shorter than the upper. 



Waste grounds, especially near towns, sparingly naturalized, probably originally from Asia. 



2. D. Tatula, Linn. Like the preceding, except that the stem is reddish- 

 purple, the corolla pale violet, and the prickles on the fruit about equal. 



Not yet recorded from California, but probably introduced in some places, from Tropical 

 America. 



3. D. quercifolia, HBK. Green, and the young herbage commonly a little 

 pubescent : leaves sparingly but deeply sinuate-pinnatifid : corolla nearly as in the 

 foregoing : capsule armed with unequal and flattened prickles, some of them large 

 and strong, even an inch long. 



Along the Rio Colorado, especially in Arizona ; perhaps indigenous, as it is a Mexican species. 

 * * Capsule nodding on a recurved peduncle. 



4. D. discolor, Bernh. Eather low, pubescent : leaves laciniately or sinuately 

 toothed : corolla 2 or 3 inches long, white with a purple tinge: capsule globose, 

 pubescent, armed with stout large prickles. Gray, Proc. Am. Acad. v. 165. D. 

 Thomasii, Torr. in Pacif. R. Rep. v. 362, & Bot. Mex. Bound. 155. 



Along the Rio Colorado, at Fort Yuma, &c. ; thence into Mexico, from which it is likely to 

 have been introduced : yet it may be indigenous. 



2. Calyx tubular and nearly cylindrical: capsule nodding on the recurved short 

 peduncle, globose, succulent, bursting from the apex someivhat irregularly 

 at mat^irity : seeds flatter, with a softer and pale smoothish coat. 



5. D. meteloides, DC. Perennial, pale, being coated with a very minute and 

 soft whitish pubescence, from one to 4 feet high : leaves mostly only repand or 

 entire : calyx 3 and corolla 7 or 8 inches long ; the latter white or suffused with 

 violet, the widely expanded border with 5 (not 10) slender-subulate conspicuous 

 teeth : capsule 2 inches in diameter, thickly beset with short and weak equal 

 prickles : seeds bordered by a narrow and uniform cord-like margin. Dun. in DC. 

 Prodr. xiii. 544 (with erroneous descr.); Gray in Bot. Mex. Bound. 154. D. Metel, 

 var. quinquecuspida, Torr. in Pacif. R. Rep. vii. 18. D. Wrightii of the gardens, 

 & Regel, Gartenfl. viii. t. 260. 



Southern part of the State, extending northward as far as to Santa Barbara on the sea-shore, 

 and eastward to Texas, and in adjacent parts of Mexico. Now common and very ornamental in 

 cultivation. 



9. NICOTIANA, Touni. TOBACCO. 



Calyx campanulate or oblong, 5-toothed or moderately lobed, persistent, closely 

 investing the capsule. Corolla various, but commonly funnelforni or salverform ; 

 the limb plaited and the plaits more or less convolute in the bud. Stamens mostly 

 included : anthers short, opening lengthwise. Style long : stigma capitate or de- 

 pressed, somewhat 2-lobed. Capsule smooth, with 2 (rarely more) cells, and very 

 numerous seeds on broad placentae borne in the axis, 2-valved from the top, and 

 the valves themselves soon 2-cleft, thus becoming as it were 4-valved. Seeds very 

 numerous and small, oval or roundish, somewhat pitted. Embryo straightish. 



