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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.
Arundinella kerrii
HABIT Perennial; caespitose; clumped loosely. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect; 30–120 cm long. Culm-nodes brown. Leaf-sheaths 9–16 cm long; glabrous on surface; outer margin hairy. Ligule a ciliolate membrane; 0.5–0.6 mm long. Leaf-blades (8–)20–50(–70) cm long; 3–8 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous; tuberculate-ciliate.
INFLORESCENCE Inflorescence a panicle; bearing juvenile spikelets at emergence.
Panicle contracted; elliptic; 5–15 cm long; contracted about primary branches. Primary panicle branches 1.5–5 cm long. Panicle branches scabrous.
Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster. Pedicels 0.2–2 mm long; scabrous; setose.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or ovate; laterally compressed; 3–3.6 mm long; 1–1.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.2–0.3 mm long.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 2.5–3 mm long; 1 length of upper glume; chartaceous; 1-keeled; 3–5 -veined. Lower glume surface hispid; hairy on veins; with tubercle-based hairs. Lower glume apex acute. Upper glume oblong, or ovate; 2.5–3.5 length of adjacent fertile lemma; chartaceous; 1-keeled; 5 -veined. Upper glume surface hispid; hairy on veins; with tubercle-based hairs. Upper glume apex acuminate.
FLORETS Basal sterile florets male; with palea; persisting on inflorescence. Lemma of lower sterile floret similar to upper glume; oblong, or ovate; 2.5–3 mm long; membranous; 1-keeled; 5–7 -veined; ciliate on margins; fringed above; acute. Palea of lower sterile floret 2.5–2.7 mm long. Fertile lemma oblong, or ovate; 1.8–2 mm long; coriaceous; without keel; 3 -veined. Lemma margins involute; interlocking with palea keels. Lemma apex entire, or dentate; 2 -fid; mucronate. Principal lemma awn 0.5–0.6 mm long overall. Palea oblong, or ovate; with auriculate flaps; 1.8–2 mm long; coriaceous; 2 -veined. Palea apex acute.
FLOWER Anthers 3; 0.9–1.6 mm long. Stigmas 2.
FRUIT Caryopsis with adherent pericarp. Hilum punctiform.
DISTRIBUTION Asia-tropical: Indo-China.
NOTES Arundinelleae. Teer. & Sun 2012.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
