Aristea cuspidata Schinz

Plants (150-)300-600 mm high. Stem lightly compressed above, often partly sheathed by large cauline bracts 50-80 mm long; lower flower clusters subtended by narrow, almost linear to narrowly lanceolate bracts 12-20 mm long. Leaves linear, fairly narrow, mostly 3-5 mm wide, with translucent or reddish, acute margins. Flower clusters up to 7, sessile except terminal, or lower 1 or 2 shortly stalked, each 4-flowered; spathes boat-shaped, rust-brown with broad transparent margins, (7-)10-14 mm long, sometimes sparsely and obscurely scabrid, bracts similar but often narrower. Flowers dark blue, green in the throat; tepals obovate, 14-18 x 8-10 mm. Filaments 5-6 mm long; anthers initially ± 4 mm long. Ovary obovoid, 3-lobed, 4-6 mm long; style 6-7 mm long, minutely 3-notched apically. Capsules narrowly 3-winged, mostly 14-18 mm long.