Amaranthaceae
Perianth segments scarious; filaments often connate at the base Amaranthaceae
Leaves opposite
Perianth segments, bracts and bracteoles rigid, acute, often spinescent
Perianth segments 4 Nyssanthes
Stamens 4. Plants erect, ± pubescent, with soft suppressed hairs. Leaves elliptic-oblong to almost lanceolate, 2–7 cm long; the upper ones smaller. Coast to Blue Mts; Illawarra district; uncommon elsewhere. Weed of disturbed ground Nyssanthes erecta
Stamens usually 2. Plants usually diffuse, very similar to N. erecta but smaller in all its parts. Coast to Blue Mts; Illawarra district; uncommon elsewhere. Weed of disturbed ground, sometimes on RF margins. Barbwire Weed Nyssanthes diffusa