dorsourt

See dorser. dorsoventral (dôr-so-ven'tral), a. IMG:content-3060.png:[blocks in formation] Inflorescence of Dorstenia Contrayerva: a, recept a cle covered with minute flowers. (From Le Maout and Decaisne's "Traité général de Botanique.") caceæ, nearly related to the mulberry and fig, characterized by minute naked monœcio us flowers crowded upon a flat or somewhat concave fleshy receptacle. The leaves are all radical, and the naked peduncle rises from a thickened rootstock. There are about 50 species, natives of tropical America and Africa, with a single species in the East Indies. The rhizome usually po e es tonic and stimulating properties. Contrayerva is the product of D. Contrayerva, D. Bras i liens is, and some other species of Brazil. dorsulum (dôr'sū-lum), n.; pl. dorsula (-lä). [NL., dim of L. dorsum, the back.] In entom., a name given by Kirby to the me so scutum or second dorsal sclerite of the thorax. It is conspicuous in hymen opters. dorsum (dôr's um), n.; pl. dorsa (-sä). [L., the back, a ridge: see dorse, dorsal.] 1. In an at.: (a) The back. (b) The back of a part or organ: as, the dorsum of the foot; the dorsum shoulder-blade.-2. In conch., the upper surface of the body of a shell, the aperture being downward.-3t. The ridge of a hill. A similar ridge, which suddenly rises into a ma y T. Warton, Hist. Kidding ton, p. 69. dorsum. Lat is sim us dors i [NL.], the broadest muscle of the back in man. See cut under muscle. - Long is sim us dors i [NL.], the longest muscle of the back in man. See muscle. Dorylæmus dors umbonal (dôr-sum'bo-nal), a. [L. dorsum, the back, + umbo ( n- ), a bo , + -al: see umbonal.] In zoöl., both dorsal and umbonal, as one of the acce ory valves in the family Pholadida. In Pholas dactylus we find a pair of umbonal plates, a dors umbonal plate and a dorsal plate. Encyc . Brit ., XVI. 687.