Rhizomatous herbs with the habit of an Iris or a gigantic Sisyrinchium; leaves chiefly basal, but more sparse and also reduced up-ward on the extensively branched flowering stem, dis tic ho us, equitant; inflorescence loosely paniculate, bearing several or many rather handsome, virtually sessile, blue flow-ers of moderate size; perianth tube very short, the lobes subequal, spreading; stamens inserted at the base of the perianth; fila-ments free or connate at the very base; an-thers linear, erect; ovary clavate, 3-celled; style very short; stigma branches subulate; fruit a loculicidally 3-valved capsule.