| + | Vinca herbacea, Waldst. & Kit. Hardy trailing glabrous herb, which usually loses its lvs. in winter: lvs. elliptical or lanceolate, rather obtuse, margins revolute; petiole very short: fls. more purple than the other species; calyx-lobes narrowly lanceolate, acuminate; corolla-lobes obovate, oblong-obtuse. E. Eu., Asia Minor. B.M. 2002. B.R. 301. |