Leaves linear-acicular, subterete-canaliculate, (18)28–50 (60) × 0.5–1 cm., mucronate, glabrous (floccose only when very young), straight or slightly flexuose, usually with axillary short shoots or leaf-fascicles and tufts of floccose hairs.
Much-branched, bushy annual herb with a slender taproot, c. 0.27–0.6 m. high; stem and branches slender and rather wiry, terete, young parts green and more or less floccose to sublanate at least when young, usually soon glabrescent.
Bracteoles of partial inflorescence, deltoid-lanceolate, 4–5 mm. long, rather similar to the bracts but more deeply concave basally to accommodate the sterile flowers, glabrous to more or less floccose, at anthesis.
Erect herb, up to 1 m high. Leaves linear, 20-50 mm long. Inflorescence with 2 or 3 fertile flowers together. Perianth recurved after fertilization. Flowers white.
Bracts lanceolate, 4–5 mm. long, glabrous or somewhat floccose, the darker midrib excurrent in amucro, more or less patent after fruit-fall.
Fruit oblong-ovoid, c. 3.5 mm. long, smooth and glabrous throughout; seed c. 3.25 mm. long, brown, smooth and shining.
Fruiting partial inflorescence a fluffy ball c. 1.5–2 cm. in diam.