Eriocaulon setaceum L.

Plants mostly submerged. Stems ca. 25 cm. Leaves filiform, 3--4 cm × ca. 0.2 mm, 1-veined. Scapes 5--15, to 11 cm, 6-ribbed; sheath 2--2.5 cm; receptacle subglabrous or villous; heads dusky, subglobose, ca. 2.5 × 3 mm; involucral bracts reflexed, straw-colored, ovate, ca. 1 mm, membranous, glabrous; floral bracts orbicular to oblanceolate, abaxially white clavate hairy toward apex or glabrous. Male flowers: sepals spathelike, abaxially shortly hairy toward (2 or)3-lobed apex, lobes truncate at apex; petals 3, elliptic to subulate, small, anterior one slightly larger than others, adaxially white clavate hairy, abaxially white clavate hairy toward apex, gland black, sometimes absent; anthers black. Female flowers: sepals 3, free, boatlike to obovate, abaxially white clavate hairy toward margin; petals 3, free, oblanceolate-linear, unequal, membranous, gland black, sometimes absent; ovary 3-loculed; style 3-cleft. Seeds narrowly ovoid, 0.3--0.4 mm; testa hexagonally reticulate, prickles 1 or 2 per cell, linear, slimy coated. Fl. and fr. Aug--Oct.

Guangdong, Guangxi, Sichuan, Yunnan [Bangladesh, Cambodia, India, Indonesia, Japan, Laos, Myanmar, Sri Lanka, Thailand, Vietnam; N Australia].

Ponds, swamps; near sea level to 1300 m.

Eriocaulon setaceum là một loài thực vật có hoa trong họ Eriocaulaceae. Loài này được L. mô tả khoa học đầu tiên năm 1753.

丝叶谷精草（学名：Eriocaulon setaceum）为谷精草科谷精草属下的一个种。