ARISTEA (name refers to the stiff leaf-points). Iridaceae. Mostly blue-flowered spring- or summer-blooming greenhouse herbs or sub-shrubs, and grown in the open far south. Leaves distichous in basal rosettes, those on the stems alternate: flowers 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 Afr. Of easy cult. Prop, by seeds and division. Not showy. --Standard Cyclopedia of Horticulture, 1917