Shrub 0.6-2 m tall, often wider than high. Branchlets and young leaves appressed-pubescent, glabrescent by flowering. Leaves terete and/or flat; flat leaves rigid, narrowly elliptic, 3-11 cm long, 1.5-3.5 mm wide, cuneate, entire, rounded or sometimes terete at apex, with mucro 1-3.5 mm long; terete leaves 1-14 cm long, 0.9-1.6 mm wide, not grooved. Inflorescence with 6-12 flowers; involucre 2.5-3 mm long; rachis 1.5-2 mm long, with tomentose and appressed ferruginous hairs; pedicels 2.5-7 mm long, glabrous. Perianth 2.5-3.5 mm long, white, glabrous. Pistil 6-9 mm long. Fruit obliquely elliptic, 1.1-1.9 cm long, 5-9 mm wide, smooth or rugose; apiculum obscure; horns 2-3 mm long. Seed 7-12 mm long; wing partly down one side of seed body only.
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