Note - this takes you off
of our website |
GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Poa borneensis
HABIT Perennial; caespitose; clumped densely. Butt sheaths purple. Culms erect; 20–30 cm long; 3–4 -noded. Lateral branches lacking. Leaves mostly basal. Ligule an eciliate membrane; 4 mm long; obtuse. Leaf-blades filiform; conduplicate, or involute; 5–15 cm long; 0.5–0.75 mm wide. Leaf-blade surface glabrous.
INFLORESCENCE Inflorescence a panicle.
Panicle open; lanceolate; 3–5 cm long. Primary panicle branches ascending; 2–3 -nate; 1 cm long; bearing spikelets almost to the base. Panicle branches scabrous.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1–2 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 3–4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 1.5 mm long; 0.6 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.5 mm long; 0.7 length of adjacent fertile lemma; membranous; 1-keeled; 1(–3) -veined. Upper glume lateral veins absent, or obscure. Upper glume apex acute.
FLORETS Fertile lemma oblong; elliptic in profile; 3.5 mm long; herbaceous; keeled; 5 -veined. Lemma apex acute. Palea keels scabrous; adorned above.
FLOWER Lodicules 2; membranous. Anthers 3; 0.5 mm long.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION Asia-tropical: Malesia.
NOTES Poeae. Jansen 1992.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.