A. geniculatus, L.
†† A meadow-grass, with erect stems, and spikes 2-3 inches or more and stouter.
A. pratensis, L.
The rare A. alpinus, Sm. with short ovoid spikes, about one inch long, only occurs in the Highlands.
(ii) Awns, when present, merely the stiff, pointed termination of the keel. Glumes free below. Paleæ two.
✲ A glaucous shore plant with long creeping stolons (sand-binder). Inflorescence harsh, 5—6 inches long. Glumes tapering, simply acute.
Psamma arenaria, Beauv.
Elymus, a much rarer sand-binder of similar habit, may lead to confusion until the 3—4 flowered spikelets and different arrangement are observed. (see p. [108].)
Agropyrum repens (var. junceum) is similar in habit and station, but its spikes and spikelets are very different (see p. [107]).
Phleum arenarium is much smaller (see below).
✲✲ Erect. Inflorescence rarely longer than three inches. Spikelets flat: glumes keeled, the keel suddenly produced into a sharp stiff awn or mucronate point. Paleæ two.
Phleum.