A. cynanchina. Linn. 9-12 in., glabrous: fls. corymbose on erect peduncles: Lvs. 4 to a whorl. Eu. and Asia.—-A. Longiflora, Waldst. 6-8 in., weak, glabrous: fls. white, yellowish inside: Lvs. 4 to a whorl, linear-lanceolate. Eu.—A. taurina. Linn. 1 ft., erect, smooth: infl. in fasciculately umbelled corymbs, white: Lvs. 3-nerved, ciliate, 4 to a whorl. Perhaps not hardy N. S. Eu.