B. sect. Patens Feinbr. in Palest. J. Bot. 1: 337 (1940), nom. illeg. superfl. Type species: B. romana (L.) Sweet [Hyacinthus romanus L.], lectotype, designated by Wendelbo in Notes R. B. G. 38(3): 425 (1980).
B. sect. Patens subsect. Romana Feinbr. in Palest. J. Bot. 1: 338 (1940), nom. illeg. superfl. Type species: B. romana (L.) Sweet [Hyacinthus romanus L.]
B. sect. Patens subsect. Cavarea Mattei ex Feinbr. in Palest. J. Bot. 1: 338 (1940), syn. nov. Type species: B. sessiliflora Kunth, lecotype, designated here.
B. sect. Oxydontae Los. ex Wendelbo in Notes RBG Edinburgh 38: 426 (1980), syn. nov. Type species: B. paradoxa Boiss = B. pycnantha (C. Koch) A. Loz.
[B. sect. Nutantes subsect. Coloratae Feinbr. [as ‘ Colorata ’] pro parte. (excluding type) in Palest. J. Bot. 1: 337 (1940).]
Leaves longer or shorter than scape, margins glabrous. Inflorescence cylindrical or oblong-ovoid; pedicels shorter than flowers or flowers ±sessile, horizontal or recurved. Perianth tubular-campanulate or urceolate, white, blue, violet to dirty purple or brown without green veining on lobes. Anthers violet or yellow. Capsule valves ovate, orbicular or elliptic with obtuse apex or cordate base.