Poa pseudoattenuata

HABIT Perennial; caespitose; clumped densely. Culms 20–35 cm long. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.2–0.8 mm long; obtuse. Leaf-blades 1–1.5 mm wide. Leaf-blade surface scabrous; rough on both sides.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 3–8 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; 4–4.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth, or scaberulous. Floret callus woolly.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2–3 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex acute. Upper glume ovate; 2–3 mm long; 0.8–0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; elliptic in profile; 2.5–3.5 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliolate; hairy below. Lemma surface pubescent; hairy on back, or on veins. Lemma margins ciliolate; hairy below. Lemma apex acute. Palea keels scaberulous; adorned above. Palea surface glabrous, or puberulous; hairy on back.

FLOWER Lodicules 2; membranous. Anthers 3; 1.2–1.5 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Siberia and Soviet far east.

NOTES Poeae. Probat 1995.

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