Erect shrub, 1-4 m tall, non-lignotuberous. Branchlets and young leaves ferruginous. Leaves 2-9.6 cm long, 1.5-2.5 mm wide, grooved or not basally on lower side; mucro erect. Inflorescence with 6 or 8 flowers; involucre 5-5.5 mm long; pedicels 6-8 mm long, densely appressed-sericeous; hairs cream-white or golden, extending onto perianth. Perianth 6.5-9 mm long. Pistil 10-11 mm long; disc of pollen presenter 1.5-1.8 mm long; gland 1.6-1.7 mm long. Fruit erect, obliquely ovate, 3.5-5 cm long, 1.5-2.3 cm wide, with stout corky projections; beak smooth; apiculum 5-10 mm long. Seed 24-28 mm long, occupying part of valve; wing encircling seed body.
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