Sporobolus R.Br. >
Spikelets 1–2 mm long, dull green-grey, crowded in narrow spike-like panicles, awnless Sporobolus
Lowest branches of inflorescence not whorled (1 or 2 branches only)
Inflorescence dense, narrow and spike-like; main axis hidden by the appressed branches except sometimes in the lower third.
Spikelets 1.6–2 mm long. Inflorescence 25–45 cm long with the branches usually lax at maturity. Tufted perennial up to 1.6 m high. Coast. Weed in pastures and waste places. Introd. from Asia. Fl. summer. Giant Parramatta Grass Sporobolus fertilis