BIDENS

(Lat.), adj. and n. f.?)’de?nz(de?ns). Gen., bident'is, From bis. twice, and dens, a tooth. Fr., bident. Ger., zweizähnig (adj.), Zweizuhn (n.). See BIDENTATE; as & n., a Fe nus of composite plants of the tribe Helianthoidee, subtribe Coreopsideæ, having the leaves oppores the flower-heads surrounded by a double involucre and having from four to eight neutral ray-florets (absent in some species), perfect deck-florets, and a flat, chaffy receptacle; and the achænia oh compre ed and bearing from two to five rigid deflexed awns instead of a pappus. [B, 19, 34.]—B. acmelloides [Bergius]. The Spilanthes oleracea. [B, 173, 180.|—B. an gust if olla [Lamarck]. The Spilanthes urens. _ [B, 173,|—B. apiifolia [Linnœus]. The Verbesina mutica. [B, 178.]—B. bipinnata [Linnœus]. Spanish needles; a species growing in waste places in the northern root and seeds have heen used as an emmenagogue and as a remedy for acute laryngitis and bronchitis. [B, 81, 2i5.|B. cornua [Linneous]. Ger., nick ender Zweizahn. Syn.; Coreopsis b, [Linnæus]. The bur-marigold; a species found in swamps and ditches in Europe and America. The herb (herb a bident is, seu verbesinæ) was formerly employed like that of B. tripart it a. [B, 180, 215.]—B. chinensis [Linnæus]. A species referred to Glo ogyne chinensis (q. ©), but probably really a species of # (B, 180,28. fervid a [Lamarek]. The Spilanthes oleracea. [B, 180.|—B. foliis tripart i to-divis is[Tournefort]. 'The B. tripart it a. [B,200.|—B. frondosa eer The stick-tight; a branching species, from 2 to 6 feet igh, growing throughout the United States. us 215.1—B. hybrid a.’ À variety of B. tripart it a. [B, 173.|—B. ocimifolia [Lamarck]. The Spilanthes alba. B 180.]—B. radiata [Thuillier]. See B. cernua.—B. tetragon a [De Candolle]. Sp., té de Milpa [Mex. Ph.]. A Mexican species, the leaves of which are used as a substitute for tea, [J. M. Maisch, “ Am. Jour. of Pharm.,” March, 1836, p. 122 (B).]—B. tripart it a [Linnæus]. Fr., chanvre aquatique, cornuet, langue de chat. Ger., Wa erhanf, dreitheiliger Zweizahn, Pfauenspiegel. A species with broadly lanceolate, tripartite, deeply serrate or incised leaves, solitary terminal yellow discoid flower-heads, and biaristate achænia. The herb (herb a verbesinæ, seu cannabis aquaticæ) was formerly used as a sialagogue, aperient, diuretic, and emmenagogue; the leaves and stalk furnish a yellow dye. [B, 173, Pa ee bident is. The flowers of B. Gees [B, 97.|-Herba bident is. The herb of B. cernua. [B,