Alternanthera Forssk. >

Perianth segments free; inflorescence not woolly Alternanthera
Plants ± pubescent. Leaves usually more than 6 mm wide
Flower clusters sessile
Perianth lobes ± equal, 2–3 mm long, acute or with a small point, thickened and hardened at the base when in fruit. Spikes globular to ovoid, 8–10 mm long, c. 6 mm wide. Ephemeral herb. Widespread but uncommon Alternanthera nana