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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.
HABIT Perennial; caespitose; clumped densely. Rhizomes short. Butt sheaths coriaceous; persistent and investing base of culm; with fibrous dead sheaths. Basal innovations extravaginal. Culms robust; 100–150 cm long. Lateral branches lacking. Leaf-sheaths keeled; smooth; glabrous on surface. Ligule an eciliate membrane; 1–3 mm long; scaberulous on abaxial surface; obtuse. Leaf-blades 15–40 cm long; 3–6 mm wide; coriaceous. Leaf-blade midrib keeled beneath. Leaf-blade surface grooved on either side of midline; scaberulous; glabrous. Leaf-blade margins cartilaginous. Leaf-blade apex hardened.
INFLORESCENCE Dioecious. Inflorescence a panicle. Peduncle smooth.
Panicle contracted; 10–25 cm long. Primary panicle branches appressed; bearing spikelets almost to the base. Panicle branches smooth.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 7–9 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.5 mm long; smooth. Floret callus woolly.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3–5 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1(–3) -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent, or obscure. Lower glume apex acuminate. Upper glume elliptic; 4–5.5 mm long; 0.8 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scaberulous. Upper glume apex acuminate.
FLORETS Fertile florets female. Fertile lemma oblong; 5–6 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliate; hairy below. Lemma surface scabrous; pubescent; hairy below. Lemma apex acute. Palea 3.5–4.5 mm long. Palea keels ciliate. Palea surface puberulous.
FLOWER Lodicules 2; 0.4–0.7 mm long; membranous; glabrous, or ciliate. Anthers 3; 2.5–3.5 mm long. Staminodes present; 0.6–1 mm long.
FRUIT Caryopsis with adherent pericarp; 2 mm long. Hilum punctiform.
MALE Male inflorescence similar to female. Male spikelets resembling female.
DISTRIBUTION Australasia: New Zealand. Antarctic: Subantarctic islands.
NOTES Poeae. Edgar 1995.
Please cite this publication as detailed in How to Cite Version: 16th November 2012.