Plants 280-450(-550) mm high, laxly 5-to 7-branched, branches subtended by bracts 3-5(-12) mm long, those subtending lower branches becoming ± leaf-like, stem ± straight, compressed, 2-winged below, often ± square above and 4-angled to narrowly 4-winged; bearing 2 or more cormlets in axils of lower leaves. Corm 12-14 mm diam., with several cormlets at base; tunics corky to somewhat papery, brown, not accumulating. Leaves 3 to 6, lower 2 to 4 inserted below ground level and largest, narrowly lanceolate, lowermost reaching to middle to shortly exceeding inflorescence, 7-15 mm wide, with prominent main and a pair of secondary veins (rarely two pairs) on either side ± as prominent; upper 1 to 3 leaves inserted in lower half of stem, progressively shorter above, not or hardly sheathing at base. Inflorescence a lax, rounded to ± flat-topped false panicle, flowers crowded distally, ultimate branchlets bearing 1 or 2(-4) sessile flowers; bracts green, margins often red, 4-7 mm long, inner usually slightly longer than outer, ± membranous above at anthesis, acute or inner slightly emarginate. Flowers zygomorphic, either white, then lower tepals usually with one or a pair of purple median spots (Jonkershoek), or blue with darker blue to violet spear-shaped markings in lower midline and often white-dotted in centre of dark colour (Bain’s Kloof), with slight sweet scent; perianth tube ± cylindric, 7-10 (Jonkershoek), 12-14 (Bain’s Kloof and Steenbras) mm long, flared from 1 mm diam. at base to 2 mm at mouth; tepals elliptic, obtuse, unequal, dorsal 10-13 x ± 4.5 mm, lower held closely together, 10-12 x ± 4 mm wide. Stamens unilateral and arcuate; filaments 5 or 6 (Jonkershoek), ± 9 (Bain’s Kloof) mm long, exserted 3-5 mm; anthers 3.3-4.5 mm long; pollen ± white. Style arching adaxial to filaments, dividing opposite lower to middle 1/3 of anthers; style branches ± 2 mm long, divided for ± 1/3 their length. Capsules top-shaped and 3-lobed, 4-5 mm long, sometimes flushed red before drying; with 1 or 2(3) per locule. Seeds globose to ovoid, sometimes flattened by pressure, slightly wrinkled, ± 2.0-2.5 x 1.7-2.5 mm, with small funicular collar.
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Cormous geophyte, 30-80 cm. Leaf blades plane. Flowers in open panicles, white or blue, stamens unilateral.