Poa sugawarae

HABIT Perennial; caespitose. Butt sheaths pallid; persistent and investing base of culm. Basal innovations intravaginal. Culms 15–30 cm long. Culm-internodes terete; smooth. Lateral branches lacking. Leaf-sheaths 1–3 cm long; glabrous on surface. Ligule an eciliate membrane; 0.5 mm long; erose; truncate. Leaf-blades 2–5 cm long; 2–3 mm wide; 1 cm long at summit of culm; glaucous. Leaf-blade surface glabrous. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; nodding; 2 cm long. Primary panicle branches 1–2 -nate; 0.5–1 cm long; bearing 1–2 fertile spikelets on each lower branch. Panicle branches smooth.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets obovate; laterally compressed; 4–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus woolly.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.5–3 mm long; 0.75 length of upper glume; membranous; much thinner on margins; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 3.5–4 mm long; 0.75 length of adjacent fertile lemma; membranous; with hyaline margins; 1-keeled; 3 -veined. Upper glume lateral veins obscure. Upper glume apex obtuse.

FLORETS Fertile lemma ovate; 4–5 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliate; hairy below. Lemma lateral veins obscure. Lemma margins ciliate; hairy below. Lemma apex erose; obtuse. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 2–2.5 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Soviet far east.

NOTES Poeae. Ohwi 1995.

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