GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Poa kuborensis

HABIT Perennial; caespitose. Basal innovations extravaginal and intravaginal. Culms erect; 2.5–8 cm long. Lateral branches lacking. Leaves mostly basal. Ligule an eciliate membrane; 2–3.5 mm long; 1.25–2 mm long on basal shoots; glabrous on abaxial surface, or scaberulous on abaxial surface; acute. Leaf-blades erect; conduplicate; 1.3–4.5 cm long; 1.25 mm wide; stiff. Leaf-blade midrib keeled beneath. Leaf-blade surface smooth. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 2.5–3.5 cm long; 0.3–0.6 cm wide. Primary panicle branches appressed; 1 -nate; 2–2.5 cm long; bearing 1–2 fertile spikelets on each lower branch. Panicle branches scaberulous; rough distally.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising (2–)3(–4) fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 6–7.6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.5–1 mm long; smooth. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 4.15–5.25 mm long; 0.9 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume lateral veins obscure. Lower glume surface smooth. Lower glume apex acute. Upper glume ovate; 4.5–5.1 mm long; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume surface smooth. Upper glume apex acute.

FLORETS Fertile lemma ovate; 4.6–5.35 mm long; membranous; keeled; 5–7(–9) -veined. Lemma surface smooth. Lemma apex acute; muticous, or mucronate. Palea keels scaberulous; adorned above. Rhachilla extension 0.6–2.75 mm long.

FLOWER Lodicules 2; membranous. Anthers 3; 0.8 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-tropical: Papuasia.

NOTES Poeae. Veldkamp 1995.

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