Crocus biflorus

Corm tunic membranous or coriaceous with entire or toothed rings at base. Leaves 4-9, synanthous, 0.5-3.5 mm broad. Prophyll absent. Bracteole present, subequal to or much narrower than bract. Throat of perianth pale to deep yellow, glabrous or finely papillose; segments 1.7-3.5 x 0.5-1.3 cm, subacute, obtuse or rounded, white, lilac or blue, exterior sometimes prominently striped, veined, speckled or stained with purple, dark blue or grey. Filaments 3-7 mm, white or yellow, glabrous or finely papillose; anthers 1-1.4 cm, yellow or blackish, sometimes yellow with blackish basal lobes, sometimes yellow with a greyish or blackish connective. Style dividing into 3 yellow to reddish-orange slender or expanded branches. 2n = 8, 10, 12, 14, 16, 18, 20, 22.  Fl. 2-6. Open rocky slopes, scrub, alpine turf, sparse coniferous woods, 200-3000 m.