Perennial herb; stems slender, straggling or scrambling, angled, glabrous or with retrorse hairs, c. 10-70 cm long. Lvs and stipules in distant whorls of 4; petioles 0.5-3 mm long; lamina 2-10-(20) × 0.8-3-(4) mm, usually narrowly elliptic, oblanceolate to spathulate; margins and midrib ciliolate; apex usually mucronate or cuspidate. Fls (1)-3-4 in terminal or axillary cymes; peduncles and pedicels ± deflexed at fruiting, filiform; peduncles (1)-3-20-(30) mm long; pedicels 1-11-(15) mm long; bracts much < lvs and stipules except at base of infl. Corolla 2-3 mm diam., white; lobes ovate-oblong or elliptic-oblong, acute to mucronate. Mericarps 1-1.5 mm diam., globose, ± finely rugulose, glabrous or sparsely clothed in appressed hairs.
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