This section is from the book "British Wild Flowers - In Their Natural Haunts Vol5-6", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
The habitat of this plant is damp grassy places, wet banks. The plant has the grass habit. The rootstock is creeping. The stems are smooth, hairless, and tufted. The leaves are flat, acute, with rough edges. The sheaths are smooth. The ligule is long. The panicle is erect, rather one-sided, pyramidal, with few branches. The stalks are smooth. The spikelets are broad, egg-shaped, brown, shining. The flowering glumes are shortly-awned near the tip, those of the male spikelets hairy, fringed with hairs, those of the complete florets hairy above. The empty glumes are membranous, shining, acute, toothed, blunt-pointed. The fruit is rounded. The plant is 4-10 in. high, flowering in May and June, and is an annual or perennial, and herbaceous.
The habitat of this plant is dry sandy and chalky fields and pastures. The plant has the grass habit. The plant is hairless. The culm is purple. The stems are smooth, ascending, leafy below, leafless above, with barren leafy shoots. The leaves are short, flat, rough, bluish-green. The leaf-sheaths are slightly swollen. The upper ligules are long. The panicle is long, cylindrical, narrow, blunt, green, somewhat interrupted. The spikelets are grouped. The empty glumes are linear to oblong, blunt below, the keel smooth or fringed with hairs. The awn is awllike, short, rigid, leathery, green, the border white dotted. The flowering glume is very small. The anthers are linear to oblong. The plant is 12-18 in. high, flowering from June to August, and is an annual or perennial, and herbaceous.
The habitat of this plant is dry pastures and banks. The plant lias the grass habit, and is downy or silky, pale-green. The root is slender, the plant stoloniferous. The stem is slender, downy, especially above. The leaves are narrow, rough at the edges, fringed with hairs, hairless below, with inrolled margins, adapted to dry conditions. The sheaths are furrowed. There is no ligule. The panicle is linear, oblong, lance-shaped, silvery, interrupted below, nearly hairy, the branches short, lobed. The spikelets are pale-green, shining. The empty glumes are oblong, lance-shaped, acute, smooth. The keel is roughish. The flowering glumes are linear, lance-shaped, rough, blunt. The plant is 6-12 in. high, flowering in June and July, and is a herbaceous perennial. Koeleria glauca, D.C. = v. arenaria, Dum. - This species or variety occurs in 5 vice-counties from Sutherland to Dorset. The plant differs in having acute, not long, narrow pointed, flowering glumes.
Poa cenisia, All. =v. flexuosa, Wahl. - This species has been found in 1 vice-county in Great Britain, but is doubtful.
Limestone False Brome Grass (Brachypodium pinuatum, Beauv.).)The habitat of this plant is downs, hedgerows, on dry limestone soils. The plant has the grass habit. The plant is bluish-green. The rootstock is creeping. The stems are numerous, erect, slender, round. The leaves are rigid, nearly hairless, flat, or with inrolled margins, linear lance-shaped. The ligule is short and blunt, fringed with hairs. The sheaths are nearly hairless. The panicle is nearly erect, spike-like, with a flat, smooth rachis, the spikelets small, smooth, first round, alternate in 2 rows (hence pinuatum), curved away from the rachis, green and purple. The glumes are hairless, the tips of the flowering glumes shortly curved. The plant is 1-3 ft. high, and flowers in July, being a herbaceous perennial.