Shiny. Dark green. Purple nodes. No cobwebby hairs at base of lemma (Poa sylvestris)
Common in coastal areas where it often forms an almost monospecific vegetation association (sparse associates include Chenopodium trigonon subsp. trigonon, Disphyma papillatum, Tetragonia implexicoma and Leptinella featherstonii).
Local though at times forming a distinct Festuca coxii grassland - and then often in sites frequented by Chatham Islands diving petrels (Pelecanoides urinatrix chathamensis), or abutting Poa chathamica grassland (in sites flattened by New Zealand fur seals (Arctocephalus forsteri)
The Poaceae (also called Gramineae or true grasses) are a large and nearly ubiquitous family of monocotyledonous flowering plants. With more than 10,000 domesticated and wild species, the Poaceae represent the fifth-largest plant family, following the Orchidaceae, Asteraceae, Fabaceae, and Rubiaceae. Though commonly called "grasses", seagrasses, rushes, and sedges fall outside this family. The rushes and sedges are related to the Poaceae, being members of the order Poales, but the seagrasses are members of order Alismatales.