Plants perennial, 1.5-10 dm; roots also often arising from proximal nodes; rhizomes often present. Stems decumbent to ascending, usually branched, without noticeable ribs, glabrous or obscurely strigose distally. Leaves: ocrea brown, cylindric, 5-23 mm, chartaceous, base inflated, margins truncate, ciliate with bristles (2-)4-10 mm, surface glabrous or strigose, not glandular-punctate; petiole 0.2-2 cm, glabrous or strigose; blade without dark triangular or lunate blotch adaxially, broadly lanceolate to linear-lanceolate, 5-25 × 0.4-3.7 cm, base tapered or acute, margins antrorsely appressed-pubescent, apex acuminate, faces glabrous or appressed-pubescent along midveins and sometimes on faces, usually punctate abaxially. Inflorescences terminal, sometimes also axillary, erect, uninterrupted or interrupted proximally, 30-80 × 2-5 mm; peduncle 10-30 mm, glabrous or strigose; ocreolae overlapping distally, often not overlapping proximally, margins ciliate with bristles to 2(-3) mm. Pedicels ascending, 1-1.5 mm. Flowers bisexual or unisexual and staminate, 2-6 per ocreate fascicle, homostylous; perianth roseate proximally, roseate, white, or greenish white distally, not glandular-punctate or sometimes glandular-punctate with punctae on tubes and inner tepals, scarcely accrescent; tepals 5, connate ca. 1/ 1/ 2 their length, obovate, 2.5-4 mm in bisexual flowers, 1.5-2.5 mm in staminate flowers, veins prominent or not, not anchor-shaped, margins entire, apex obtuse to rounded; stamens 8, included or exserted in staminate flowers; anthers pink or red, elliptic to ovate; styles 3, connate near middle. Achenes included or apex exserted, brown to brownish black or black, 3-gonous, 1.5-3 × 1-2.3 mm, shiny, smooth.
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