Alternanthera denticulata

Trailing to weakly ascending annual or perennial, stems to c. 50 cm long or more, pubescent (at least when young) along opposite lines on internerves and at nodes. Leaves oblong or narrowly elliptic 25–70 mm long, 2–8 mm wide, glabrescent; margins irregularly and minutely callus-toothed. Flowers in axillary spherical to ovoid spikes, 4–8 mm long; bracts and bracteoles acuminate, mostly 1–2 mm long; tepals equal, lanceolate, usually 2.5–3.5 mm long and under 1 mm wide, glabrous, white or pinkish, remaining free to base; fertile stamens usually 3, alternting with staminodes, rarely staminodes absent. Fruit broadly obcordate, c. 1 mm long, 1.5 mm wide. Flowers most of year, mainly Oct.–Jan.