Cormous geophyte, mostly 50-100 mm tall, corm round at base, with curved acuminate teeth. Leaves 3-5, with 4 grooves, narrowly 4-grooved. Flowers dark red with black blotches at the edge of a creamy cup, filaments joined in a column; outer bracts keeled with narrow, dry, usually brown margins, inner bract 2-keeled, with dry brown margins; fruiting peduncles curved.
Flowers 30-45(-55) mm long, deep claret-red, each segment with a black blotch on a blue or purplish grey or sometimes pale yellow background. Filaments joined, forming a short, stout, shiny-black column; anthers 10-15 mm long. Style 8-12 mm long.