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Rumex hymenosepalus, Torr. Canaigre. Raiz Colorada. Erect, reaching 3 ft., glabrous, the root of clustered fusiform tubers: lvs. oblong-lanceolate, sometimes 1 ft. long, narrow at either end, short-petioled, entire, gray-green, somewhat mottled beneath: fls. perfect, large, in crowded panicles, green: fruiting calyx-lobes 2/3in. across, brown, entire, veiny, the pedicels drooping. Okla. and Texas to Calif. B.M. 7433.—The plant has some ornamental value, but is of economic importance as a tannin-producing plant, although the supply is insufficient to maintain an industry. The tannin is secured from the dahlia-like roots. For literature on the economic uses of the plant, consult reports of experiment stations in Ariz., Calif., and elsewhere, and Wooton & Standley, Flora of New Mexico (Smithsonian Institution).

Rumex hymenosepalus, Torr. Canaigre. Raiz Colorada. Erect, reaching 3 ft., glabrous, the root of clustered fusiform tubers: lvs. oblong-lanceolate, sometimes 1 ft. long, narrow at either end, short-petioled, entire, gray-green, somewhat mottled beneath: fls. perfect, large, in crowded panicles, green: fruiting calyx-lobes 2/3in. across, brown, entire, veiny, the pedicels drooping. Okla. and Texas to Calif. B.M. 7433. The plant has some ornamental value, but is of economic importance as a tannin-producing plant, although the supply is insufficient to maintain an industry. The tannin is secured from the dahlia-like roots. For literature on the economic uses of the plant, consult reports of experiment stations in Ariz., Calif., and elsewhere, and Wooton & Standley, Flora of New Mexico (Smithsonian Institution).

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