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. arb6rea, the Tree-Stramonium, representing the section Brugmansia, with very large 

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

 perhaps have 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. iNERMis, 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. Stram6nium,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 1 ) 

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

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

 States. (Nat. from trop. Amer.) 

 D. quercif6lia, HBK. Green, and young parts commonly somewhat pubescent: leaves 

 sparingly but mostly deeply sinuate-pinnatifid : corolla nearly as of D. Tatula : 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 nodding: 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 capsule and its stout 

 large prickles pubescent. — Linn, (in Lit.) viii. 138; Gray, Proc. Am. Acad. v. 1(35. D. 

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

 S. E. California. (Introd. 1 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. raeteloides, DC. Pruinose-glaucescent with minute puberulence or pubescence, a 

 foot to 3 feet high from a (at least commonly) perennial root : leaves xmequally 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 funnelform 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 10-dentate corolla) ; Gray in Bot. Mex. Bound. 154 ; Fl. Serres, t. 1266. D. Wrightii, 

 Hortul. ; Regel, Gartenfl. viii. t. 260. D. Metel, var. quinquecuspida, Torr. in Pacif. R. Rep. 

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

 bara, California. (Adjacent Mex.) 



12. HYOSC^AMUS, Tourn. Henbane. (From vg, vog; a hog, and 

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

 the medicinal Henbane, sparingly introduced. 

 H. nIger, L. (Black Henbane.) Biennial with a fusiform root, or sometimes annual, 



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



