. Bulletin. Agriculture. PLANTS FURNISHING ROOT DKUGW. 13 are coiupresseil. and rojisist of two rows of si)ik«'lets ou a wavy ami llaLU'iicd axis. These beads are i)rodiiced from July to September. Couch-grass belongs to the grass family (Poacea?). Description of rootaioclx.—The pale-yellow, smooth rootstock is long, tough, and jointed, creeping along underneath the ground and pushing in every direc- tion. As found in the stores, it consists of short, angular pieces, from oue- eightb to one-fourth of an inch long, of a shining straw color, and hollow. These pieces are odorless, hut have a some
. Bulletin. Agriculture. PLANTS FURNISHING ROOT DKUGW. 13 are coiupresseil. and rojisist of two rows of si)ik«'lets ou a wavy ami llaLU'iicd axis. These beads are i)rodiiced from July to September. Couch-grass belongs to the grass family (Poacea?). Description of rootaioclx.—The pale-yellow, smooth rootstock is long, tough, and jointed, creeping along underneath the ground and pushing in every direc- tion. As found in the stores, it consists of short, angular pieces, from oue- eightb to one-fourth of an inch long, of a shining straw color, and hollow. These pieces are odorless, hut have a somewhat sweetisli taste. Collection, prices, and uses.—Couch-grass, which is official in the United States PharmacopiPia. should be collected in spring, carefully cleaned, and the rootlets removed. The rootstock (not the rootlets) is then cut into short pieces, about two-fifths of an inch in length, for which puri)ose an ordinary feed-cutting'»^niachine may be used, and thoroughly dried. Couch-grass is usually destroyed by plowing up and burning, for if any of the joints are permitted to remain in the soil new plants will be produced. But, instead of burn- ing, the rootstocks may be saved and prepared for the drug market in the manner above stated. The prices range from 3 to 5 cents a pound. At present couch-grass is collected chiefly in Europe. A fluid extract is prepared from couch-grass, which is used in affec- tions of the kidney and bladder. WILD TTKNIP. Arisaema triphyllum (I^.) Torr. >S!/noitiJiii.—Arum tripliijlliini L. Other cwnmon names.—Arum, three-leaved arum. Indian turnip, jack-in-the-pulpit. wnke-roI)in. wild I)epper, dragon-turnip, brown Fir;. 1. -Couch-grass {Ayropyrou reiitiiits). devil's-ear, marsh-turnip, swamp-turnip, meadow-turnip, pepper-turnip, starch- wort, bog-onion, priest's-pintle, lords-and-ladies. Habitat and range.—Wild turnip inhabits moist woods from Canada to Florida and westward to Kansas and Minnesota. Description of plan
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