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Herbs annual, erect or ascending, 10-50 cm tall. Stem branched from or near base, glabrous or obscurely pubescent. Petiole 2-10 mm; leaf blade obovate, oblong, or linear, 1.5-6.5 mm × 0.3-2.5 cm, both surfaces glabrous or adaxially pubescent, base attenuate, apex acute or obtuse, with a mucro. Heads globose, becoming somewhat lengthened, with 3-7-flowered cymes; rachis 0.2-3.5 cm, glabrous or pubescent. Bracts and bracteoles ovate-lanceolate, 3-5 mm, white on margin and with green or purple (?red) midvein, apex long acuminate. Tepals obliquely spreading at anthesis, later erect, ovate-lanceolate or oblong-lanceolate, 4-5 mm. Stamens 5; filaments connate at base. Ovary ovoid, glabrous; style nearly as long as filaments. Utricles enclosed in persistent perianth, pale green, ovoid, 3-3.5 mm in diam., dehiscent by lid. Seeds 1.5-2 mm in diam. Fl. May-Jun, fr. Jul-Aug. 2n = 32.
A herb. It can be erect or trailing on the ground. It grows to 80 cm high. The stems are branched near the base. The leaves are finely hairy underneath. The leaves are alternate. The leaves are narrowly oblong and 2-6 cm long by 1-2 cm wide. The flowers are in round heads. There are 3-7 flowers in a group. The flowers are red.
