Festuca trichovagina

HABIT Perennial; caespitose. Culms erect; slender; 12–30 cm long; 3–4 -noded. Leaf-sheaths open for most of their length; retrorsely scabrous. Leaf-sheath auricles erect; 1 mm long. Ligule an eciliate membrane; 0.3 mm long. Leaf-blades involute; 2–35 cm long. Leaf-blade surface scabrous; rough abaxially, or on both sides.

INFLORESCENCE Inflorescence a panicle. Peduncle antrorsely scabrous above.

Panicle spiciform; linear; 3–6 cm long; 0.4–1 cm wide. Primary panicle branches 1–1.3 cm long. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.

FERTILE SPIKELETS Spikelets comprising 4–7 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 7–10 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1 mm long; pubescent.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.5–3.5 mm long; 0.6–0.75 length of upper glume; membranous; much thinner on margins; without keels; 1–2 -veined. Lower glume lateral veins absent, or obscure. Lower glume margins eciliate, or ciliolate. Lower glume apex acute. Upper glume lanceolate; 4–4.5 mm long; 0.75 length of adjacent fertile lemma; membranous; with membranous margins; without keels; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 4–5 mm long; chartaceous; without keel; 5 -veined. Lemma surface scaberulous; rough generally, or above. Lemma apex acuminate; mucronate, or awned; 1 -awned. Principal lemma awn 0.5–1 mm long overall. Palea 1 length of lemma. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 2–2.5 mm long; brown. Ovary glabrous.

DISTRIBUTION Pacific: north-central.

NOTES Poeae. Li 2011.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.