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 grass is damp, shady woods. The habit is grass-like. The stem is stoloniferous below, tall, tufted, erect, shining. The leaves are lance-shaped, linear to oblong, broad, flat, thin, acute, rough above, pale-green, scented. The sheath is smooth. The ligule is long, blunt, torn. The panicle is branched, spreading, loose, and slender, bent down in fruit, vertical in flower, the whorls distant, few-flowered. The pales are acute. The empty glume is elliptic to egg-shaped, blunt, with rough, transparent edges, and the flowering glume is smooth, white, polished. The fruit is rounded, included in the glume and palea. The plant is 2-4 ft. high, flowering in June and July, and is a herbaceous perennial.
The habitat of this plant is woods, thickets, hedgebanks. The plant has the grass habit. The stem is tall and smooth. The leaves are broad, flat, with hairy sheaths, with downwardly-directed hairs, long, the lower broadest. The ligule is short. The panicle is drooping, downy, with flowers arranged all one side. The lower branches are 2-6-divided, loose, thread-like, with a rough rachis. The spikelets are narrow, bluish-green. The empty glumes are long-pointed, hairy or not. The flowering glumes are 5-8, twice as long as the awn, spreading in flower, erect in fruit, hairy, the tip 2-toothed. The plant is 4-5 ft. high, flowering in July, and is a herbaceous perennial.
The habitat of this plant is damp woods, and damp shady places. The habit is grass-like. The stem is simple, stout, the leaves rough above, bluish-green below, the point slender. The ligule is acute and torn. The panicle is purplish-brown, open, erect, with nearly erect branches, close, lobed. The spikelets are crowded, arranged one side of the stalk. The empty glumes are narrow. The hairs are longer than the pales, the awn straight. The plant is 3-5 ft. high, flowering in June and July, aud is a herbaceous perennial.
The habitat of this plant is damp woods, copses, hedges, marshes, and wet places. The habit is as in the last. The stem is erect, smooth, slender. The leaves are narrower and smoother than in the last. The ligule is shorter. The panicle is erect, loose, purplish, the branches spreading, with a drooping apex. The spikelets are spreading. The empty glumes are lance-shaped, broader. The awn is not so long, small, terminal. The hairs are longer than the flower-. ing glume. The plant is 2-4 ft. high, flowering from June to August, and is a herbaceous perennial.
The habitat of this plant is dry woods, thickets, heathy places, sandy waste places, open places on a light soil. The plant has the grass habit. The root is creeping. The plant is more slender than H. lanatus. The stem is smooth or slightly hairy, softly hairy at the nodes. The leaves are rough, the sheaths hairless. The lower flower has no awn. The upper glume is acute, the awn rough, kneed, longer than the glumes. The glumes are rough, long-pointed. The plant is 1-3 ft. high, flowering in June till August, and is a herbaceous perennial.