Poa subinsignis

HABIT Perennial; caespitose. Rhizomes absent. Butt sheaths glaucous. Culms 40–75 cm long; 2–5 mm diam. Leaf-sheaths open for most of their length; with 0.66 of their length closed; scaberulous. Ligule an eciliate membrane; 1.5–2.3 mm long; erose. Leaf-blades (3–)4–7(–8.5) mm wide. Leaf-blade surface scabrous; rough adaxially.

INFLORESCENCE Inflorescence a panicle. Peduncle smooth.

Panicle contracted; oblong; loose; (8–)10–15(–20) cm long. Primary panicle branches ascending. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising (2–)4–5 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 3.8–5.8(–6.5) mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes scaberulous; glabrous. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2–3 mm long; 0.66 length of upper glume; membranous; 1-keeled. Upper glume elliptic, or ovate; 3–3.8 mm long; 0.9 length of adjacent fertile lemma; membranous; 1-keeled. Upper glume apex acuminate.

FLORETS Fertile lemma ovate; 3.5–4.3 mm long; membranous; keeled; 5 -veined. Lemma surface glabrous. Lemma apex acute. Palea keels scaberulous. Palea surface glabrous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 1.3–2 mm long.

DISTRIBUTION Asia-temperate: Soviet far east.

NOTES Poeae. Probatova 2014.

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