Stoloniferous perennial; stems decumbent to erect, often ± tufted, weak, to c. 75 cm long, densely puberulent except towards base; main stems terete or bluntly-angled; branches 4-angled. Lvs and stipules (5)-6-9 per whorl, sessile, 5-20 × c. 1-2 mm, linear or linear-oblong but usually revolute and appearing subulate, ± scabridulous above and on midrib below; margins ciliate; apex sharply acute to shortly awned. Infl. a dense panicle of terminal and axillary cymes, with main axis to > 15 cm long and usually densely puberulent; peduncles often glabrous; pedicels usually < 1.5 mm long at anthesis, glabrous, not divaricating at fruiting, ± = peduncles and sometimes subtended by leaflike bracts; fls very numerous. Corolla 2-3 mm diam., yellow; lobes ovate, with incurved mucro. Mericarps c. 1 mm diam., globose, glabrous, rugulose.