Puccinellia byrrangensis

HABIT Perennial; caespitose; clumped densely. Culms 6–25 cm long. Leaf-sheaths open for most of their length. Ligule an eciliate membrane; 1–2 mm long. Leaf-blades flat, or conduplicate; 0.6–2 mm wide. Leaf-blade surface smooth; glabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 2–6 cm long. Panicle branches smooth.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 3.5–6 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; shorter than spikelet. Lower glume elliptic; 1.5–3 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume elliptic; 1.5–3 mm long; 0.75 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex obtuse.

FLORETS Fertile lemma oblong; 2.7–4 mm long; membranous; much thinner above; purple; without keel; 5 -veined. Lemma lateral veins obscure; stopping well short of apex. Lemma surface pubescent; hairy at base. Lemma apex acute. Palea 2 -veined. Palea keels smooth; eciliate, or ciliolate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 1.3–1.7 mm long. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Siberia.

NOTES Poeae. Tsvelev 1995.

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