Poas include both native and introduced species. Most are perennial. Willis in "A Handbook to Plants in Victoria" included most of the Victorian native poas, and all of the native species dealt with here, in a broad Poa australis. It is not always easy to identify poas with certainty.
Poa spikelets are sideways compressed, with up to 12 bisexual florets. The spikelets are small, usually up to 5mm long. The upper florets often reduced in size. Lemmas often have cobwebby hairs at the base. Grey Tussock-grass (Poa sieberiana) is by far the most common native poa and is very abundant in forest areas. Common Tussock-grass (P. labillardierei) grows in wetter areas e.g. stream banks or wetter forests. Soft Tussock-grass is more common in grasslands.