Poa primae

HABIT Perennial; caespitose; clumped densely. Rhizomes absent, or short. Culms 15–35 cm long; 2 -noded; with 0.33 of their length below uppermost node. Culm-internodes smooth. Lateral branches lacking. Leaf-sheaths open for most of their length; with 0.2–0.25 of their length closed; smooth; glabrous on surface. Ligule an eciliate membrane; 1.7–2.5 mm long; 0.2–0.5 mm long on basal shoots. Leaf-blades filiform; conduplicate; 0.5 mm wide. Leaf-blade surface puberulous; hairy adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; lanceolate; 5–10 cm long. Panicle branches scaberulous.

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. Rhachilla internodes pubescent. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; membranous; 1-keeled. Lower glume apex acute. Upper glume ovate; membranous; 1-keeled. Upper glume apex acute.

FLORETS Fertile lemma ovate; 3.5–4.3 mm long; membranous; keeled; 5 -veined. Lemma apex acute. Palea keels scaberulous.

FLOWER Lodicules 2; membranous. Anthers 3; 1.6–2.3 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Caucasus.

NOTES Poeae. Tsvelev 1995.

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