Australian Tropical Rainforest Plants - Online edition
Alternanthera nana R.Br.
Brown, R. (1810) Prodromus Florae Novae Hollandiae : 417. Type: v.v.
Leaf blades about 17-30 x 8-12 mm. Upper surface glabrous, lower surface with hairs along the midrib when young.
Inflorescence sessile in the axils, globose to ovoid, 5-10 x 6 mm; rachis woolly; bracts ovate, acute; perianth segments 2-3 mm long, oblong or oblong-lanceolate with short acute apex, glabrous. Stamens 4 or 5; staminodes 1 or 0, filaments filiform, slightly thickened at base.
Fruits borne in a tightly-packed head-like structure. Each fruit about 2 x 2 mm, enclosed in the perianth remnants. Seeds about 1.5 x 1.5 mm. Embryo U-shaped, cotyledons shorter than the radicle. Radicle about 0.8-1. mm long.
Features not available.
Suspected of causing death of sheep (Webb 1948).