Poa languidior

HABIT Perennial; caespitose. Basal innovations extravaginal and intravaginal. Culms geniculately ascending; weak; 28–100 cm long; 4–6 -noded; rooting from lower nodes. Leaf-sheaths antrorsely scabrous; glabrous on surface. Ligule an eciliate membrane; 1.2–3 mm long; acute. Leaf-blades 5–12 cm long; 1–2 mm wide; flaccid. Leaf-blade surface scabrous; rough adaxially; glabrous. Leaf-blade margins scabrous. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; effuse; nodding; 10–22 cm long. Primary panicle branches spreading, or reflexed; 1–2 -nate; 3–6 cm long. Panicle branches flexuous; scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1–2 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 1.5–3 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth. Floret callus woolly.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1.5–2.5 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 2.5–3 mm long; 0.66–0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acute.

FLORETS Fertile lemma ovate; elliptic in profile; 2.9–4.6 mm long; membranous; keeled; 5 -veined. Lemma lateral veins obscure. Lemma surface glabrous. Lemma apex apiculate. Palea 2.5–3.2 mm long. Palea keels scabrous; adorned above.

FLOWER Lodicules 2; membranous. Anthers 3; 1.1–1.4 mm long.

FRUIT Caryopsis with adherent pericarp; ovoid; 2 mm long; dark brown. Hilum punctiform.

DISTRIBUTION Asia-tropical: Papuasia.

NOTES Poeae. Alp Fl N Guin 1994.

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