Poa trichophylla

HABIT Perennial; cushion forming. Culms erect; 5–10 cm long. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1.5–2 mm long; white; acute. Leaf-blades filiform; convolute; 1–2 cm long; 0.3–0.5 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic; 1.5–2.5 cm long; 0.8–1 cm wide. Primary panicle branches 1–2 -nate.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 0.75 length of upper glume; membranous; much thinner on margins; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 0.9 length of adjacent fertile lemma; membranous; with hyaline margins; 1-keeled; 3 -veined. Upper glume apex obtuse.

FLORETS Fertile lemma ovate; 2.5 mm long; membranous; keeled; lightly keeled; 5 -veined. Lemma lateral veins obscure. Lemma apex obtuse.

FLOWER Lodicules 2; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Europe: southeastern.

NOTES Poeae. Fl Eur 1995.

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