Poa davisii

HABIT Perennial; caespitose; clumped loosely. Rhizomes elongated. Culms decumbent; 15–35 cm long. Culm-internodes smooth. Lateral branches lacking. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 1–1.5 mm long; acute. Leaf-blades filiform; 5–10 cm long; 1–2 mm wide. Leaf-blade surface smooth. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic; 5–9 cm long; 1–2 cm wide. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

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

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 4–4.5 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acuminate. Upper glume ovate; 4–4.5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; 4.5 mm long; membranous; much thinner above; keeled; 5 -veined. Lemma midvein ciliate. Lemma surface pubescent; hairy below; hairy on back. Lemma apex obtuse. Palea keels woolly; adorned in the middle.

FLOWER Lodicules 2; membranous. Anthers 3; 2 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Poeae. Bor 1995.

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