Awned canary-grass

Phalaris paradoxa is a species of grass in genus Phalaris. Common names include awned canary-grass and hood canarygrass. The spikelets are very different from those of other members of this genus.

Annual, tufted. Culms 15–100 cm tall. Uppermost leaf sheath inflated; leaf blades 2–9 mm wide; ligule 2–8 mm. Panicle dense, narrowly oblong, 4–10 cm, base enclosed in uppermost leaf sheath. Spikelets arranged in clusters composed of 1 fertile spikelet encircled by 6 sterile spikelets, clusters falling entire, sterile spikelets sometimes reduced to club-shaped clusters of glumes. Fertile spikelet: glumes 4.5–6 mm, prominently 7–9-veined, narrowly winged, wing expanded near middle into large tooth, pale green or straw-coloured with dark green stripe above tooth, apex attenuate; sterile lemmas abortive, represented by 2 minute fleshy scales at base of fertile lemma; fertile lemma elliptic, 2.8–3.2 mm, cartilaginous, shiny, sparsely pilose toward apex. Anthers 1–1.8 mm.

Awned canary-grass Phalaris paradoxa (c) Andrew P. Chick 2020
Awned canary-grass Phalaris paradoxa (c) Andrew P. Chick 2020
Awned canary-grass Phalaris paradoxa (c) Andrew P. Chick 2020