240 SOLANACEiE. Datura. 



rescent, of rank odor, and narcotic-poisonous qualities, natives of America and 

 tropical Asia; with ovate leaves, and large flowers on short peduncles in the 

 forks of the branching stems, produced through the season. Corolla commonly 

 white or violet, usually more or less fragrant. 



D. AKBOREA, the Tree-Stramonium, representhig the section Brugmansia, with very large 

 pendulous flowers, and oblong indehiseent fruit reflexed, cultivated in conservatories, may 

 perhaps liave become spontaneous on the southern borders of the United States. 



§ 1. Calyx prismatic, 5-toothed : border of the corolla with 5 acute teeth : cap- 

 sule dry, 4-valved : seeds thickish, with a dark-colored and more or less rugose or 

 pitted crustaceous coat : annuals, with flowers erect. 



* Capsule strictly erect: seeds somewhat scrobiculate-rugose. 

 D. iNEKMis, Jacq. Vind. iii. 44, t. 82, which may sometimes be met with in waste ground, is 

 very similar to D. Stramonium, but with a perfectly smooth and unarmed capsule. 

 D. Stramonium, L. (Common Stramonium or Jamestown-weed.) Green, glabrous, 1 to 4 

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

 3 inches long: capsule thickly armed with short stout prickles, the lower ones mostly 

 shorter. — A weed of waste grounds, common, especially in the Atlantic States. (Nat. 

 from Asia ? ) 

 D. TAtula, L. Stem purple, commonly taller: corolla pale violet: prickles of the capsule 

 all nearly equal : otherwise similar to the preceding. — Waste grounds in the Atlantic 

 States. (Nat. from trop. Anier.) 

 D. QUERCiFOLiA, HBK. Green, and young parts commonly somewhat pubescent : leaves 

 sparingly but mostly deeply sinuate-pinnatifid : corolla nearly as of D. Tatida : capsule 

 armed with large and unequal flattened prickles, some of the upper not rarely an inch long 

 (nearly as in D. ferox). — S. W. borders of Texas to Arizona. (Nat. from Mex.) 

 * * Capsule uoclding: seeds rugose-tuberculate. 

 D, DISCOLOR, Bernh. More or less cinereous-pubescent, low : leaves sinuately or laciniately 

 toothed : corolla white tinged with purple, 2 or 3 inches long : globose capsuli?and its stout 

 large prickles pubescent. — Linn, (in Lit.) viii. 138; CJray, Proc. Am. Acad. v. 165. I). 

 Thomasii, Torr. in Pacif. R. Kep. v. 362, & Bot. Mex. Bound. 155. — Colorado, Arizona, and 

 S. E. California. (Introd. ? from Mex.) 



§ 2. Calyx tubular, mostly 5-toothed : corolla large, 6 to 8 inches long ; the 

 border with 5 or 10 acute teeth : capsule nodding on the short recurved peduncle, 

 globose, succulent, bursting irregularly at maturity : seeds flatter, with a softer 

 and pale smoothish coat : flowers erect. 



D. meteloides, DC. Pruinose-glaucescent with minute puberulence or pubescence, a 

 foot to 3 feet higli from a (at least commonly) peroinicil root : leaves unequally ovate, 

 merely repand or nearly entire : calyx cylindrical, about 3 inches long : corolla white 

 suffused with violet, sweet-scented, 7 or 8 inches long when well developed, the widely 

 dilated and very open f unnelform limb 5 or 6 inches in diameter, and with 5 slender subu- 

 late teeth : persistent base of the calyx narrow : capsule 2 inches in diameter, thickly 

 muricate with short and equal prickles: seeds with a narrow and sometimes cord-like mar- 

 gin. — Dunal in DC. Prodr. 1. c. 544 (the descr. and drawing of Mo(;ino and Sesse wrong 

 as to lO-derJate corolla) ; Gray in Bot. Mex. Bound. 154; Fl. Serres, t. 1266. D. Wrii/Iilii, 

 Hortul. ; Kegel, Gartenfl. viii. t. 260. D. Mdcl, var. ijuinqnecuspldd, Torr. in Pacif. R. Rej). 

 vii. 18. — Along streams, S. W. Texas, on the Rio Grande, to Arizona and Santa Bar- 

 bara, California. (Adjacent Mex.) 



12. HYOSC^AMUS, Tourn. Henb.\ne. (From tV, vog, a kog, and 

 wafioi,', a bean, said to poison .swine.) — Natives of the Old World, one species, 

 the medicinal Henbane, spai'ingly introduced. 



H. NfoER, L. (Black Henrane.) Biennial with a fusiform root, or sometimes annual, 

 viscid-pubescent or villous, heavy-scented (narcotic), a foot or two high: leaves oblong. 



