| + | Leaves distichous in basal rosettes, those on the st. alternate: fls. clustered in spikes, not lasting; the perianth with a short tube and oblong, spreading, nearly equal segms. that twist up spirally after flowering; stamens short-stalked, borne on the throat of perianth-tube: fr. an oblong or cylindrical 3-valved caps.—About 30 species in Air. Of easy cult. Prop, by seeds and division. Not showy. |