Austrostipa is a primarily Australian genus of plants in the grass family, commonly called speargrass.
Austrostipa stipoides, commonly known as prickly spear-grass or coast spear-grass, is a kind of tussock grass native to the coasts of south-eastern Australia and of New Zealand.
 It forms large clumps up to about 80 cm in height with smooth inrolled leaves 70 cm long and 1 mm wide with sharp tips.
 It is found on sea cliffs, the edges of beach dunes and salt marshes and tolerates strong winds and sea spray.
Austrostipa variabilis is a species of grass that grows in southern parts of Australia.
Austrostipa crinita is a species of grass that grows in coastal parts of midwest Western Australia.
Austrostipa ramosissima, the stout bamboo grass, grows in moist areas in eastern Australia.
 It is often found in well drained habitats in eucalyptus woodlands or forests.
Austrostipa pubescens, the spear grass, grows in heathland and sandy areas in eastern Australia.
Echinochloa crus-galli is a type of wild grass originating from tropical Asia that was formerly classified as a type of panicum grass.
 It is commonly known as cockspur (or cockspur grass), barnyard millet, Japanese millet, water grass, common barnyard grass, or simply "barnyard grass" (which may refer to any species of "Echinochloa" or the genus as a whole however).
 This plant can grow to 60" (1.5 m) in height and has long, flat leaves which are often purplish at the base.
 Most stems are upright, but some will spread out over the ground.
 Stems are flattened at the base.
 The seed heads are a distinctive feature, often purplish, with large millet-like seeds in crowded spikelets.
Edraianthus (rock bells or grassy bells) is a small genus of flowering plants in the bellflower family Campanulaceae.
 "Edraianthus" species are native to mountains of the Balkan, including Croatia, Bosnia and Serbia, and as far as Romania, Italy and Greece.
Austrostipa flavescens, commonly known as coast spear-grass, is a species of plant in the true grass family.
 It is native to southern Australia.
 It grows as a tufted perennial tussock grass, with flat to narrow inrolled leaves, up to about 1.2 m in height.
 It is found on sandy, sandy loam and limestone soils as well as on dunes.
Austrostipa compressa, the compact needlegrass, originally described as "Stipa compressa", is a species of grass that grows in south west Western Australia.

Question: Which is a type of grass, Edraianthus or Austrostipa?
Answer: Austrostipa