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Leaves lanceolate to lanceolate or deltoid-ovate, acute or acuminate, glabrous or more frequently furnished on the inferior surface about the base with scattered, short, multicellular hairs; larger stem-leaves 2.2–10 × 1–7 cm., shortly cuneate to truncate or subcordate at the base, with a petiole 1–4.5 cm. long; upper and branch leaves progressively smaller and usually narrower.
Perennial herb, frequently somewhat woody below, vary variable in habit, prostrate and rooting at the lower nodes to erect or scandent up to c. 5 m., moderately to considerably branched.
Tepals 2 mm. long, glabrous, elliptic-oblong, obtuse and subcucullate, pale greenish or whitish (pale brown or blackish when dry), the midrib not excurrent, margins narrowly scarious.
Capsule oblong, c. 3 × 1 mm., usually clearly exerted from the perianth when fully mature, brown, more or less truncate with the apex slightly to distinctly rugose-incrassate.
Inflorescences scattered or approximate, few or up to 10-flowered, dense and rounded or lax (with peduncles and pedicels up to c. 3 mm. long), 2–12 mm. in diam.
Stem and branches usually obviously striate or sulcate, glabrous or sometimes (especially at the nodes) furnished with a few multicellular hairs.
A herb. It is often 15 cm high but can be a scrambler. It can be 1-1.3 m long. The leaves have long leaf stalks. The leaf blade is 8 cm long.
Bracts and bracteoles 0.5–1.25 mm. long, lanceolate or deltoid, glabrous, pale-membranous with the brownish or blackish midrib not excurrent.
Filaments with the free apices slightly to distinctly longer than the cup; no intermediate teeth present.
Seeds lenticular, black, very shiny, c. 1 mm., feebly reticulate with flat areolae.
Ovary (5) 6–9-ovulate; stigmas 2, reflexed, much longer than the very short style.
