. Bulletin. L'agriculture. 30 AMKHR MiiDlCl^AL'A.X VERS LES FEUILLES ET HEKBS. JIMSUX LA LUTTE CONTRE LES MAUVAISES HERBES. Slrainoniuin Pharmacopmal iiame Datura L..'-Stramonium. Autres noms communs.-Jamestown weed (d'où le nom "stramoine'' est de- rived). Jamestown lily, Thorn, devil'sApple, Apple, Apple mad-appleof stinkwort, Pérou, tabouret des champs, devii"s-lrum- pet, d'épilobes, dewtry. Habitat et répartition.- C'est un weetl très commune dans les champs et les lieux presque partout aux États-Unis, sauf dans le Nord et l'Ouest. Il est largement dispersée dans nearlj- tous les pays chauds. Description.-J j m s o n La lutte contre les mauvaises herbes est un mauvais sce

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. Bulletin. Agriculture. 30 AMKHR'A.X MiiDlCl^AL LEAVES AND HEKBS. JIMSUX WEED. Datura slrainoniuin L. Pharmacopmal iiame.'—Stramonium. Other common names.—Jamestown weed (from which the name "jimson weed'' is de- rived). Jamestown lily, thorn apple, devil'sapple, mad-apple, appleof Peru, stinkweed, stinkwort, devii"s-lrum- pet, fireweed, dewtry. Habitat and range.— This is a very common weetl in fields and waste places almost everywhere in the United States except in the North and West. It is widely scattered in nearlj- all warm countries. Description.—J i m s o n weed is an ill-scented, poisonous annual belong- ing to the nightshade fam- ily (Solanaceae). Its stout, yellowish-green stems are about 2 to 5 feet high, much forked, and leafy with large, thin, wavy- loothed leaves. The leaves are from 3 to 8 inches long, thin, smooth, j)ointed at the top and usually narrowed at the base, somewhat lobed or irregularly toothetl and waved, veiny, the upper surface dark green, while ihe lower surface is a light- er green. The flowers are large (about 3 inches in length), white, funnel f-haped, rather showy, and with a pronounced odor. Jimson weed is in flower from al)out May to Septendx'r, and the seed j)ods which follow are dry, oval, ])rickly caj)- sules, about as large as a horse-chestnut, which upon rfi)ening burst open into four valves containing numerous black, wrinkled, kidney-shaped seeds, which are poisonous (Fig. 22.) Collection, prices, and itscs.—The leaves of the jimson weed, yielding, when assayed by the United States Pharmacoptria process, not less than 0.3.') per cent of its alkaloids, are ofhcial under the name "Stramonium." They are collected at the time jimson weed is in flower, the entire plant being cut or j)ulled up and the leaves stripped and carefully dried in the shade. They have an un))leasant, narcotic odor and a bitter, nauseous taste. T)rying diminishes (he disagreeal)le odor. The collector may receive from 2 to 5

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