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.

Parabambusa kainii

HABIT Perennial; caespitose; clumped loosely. Rhizomes short; pachymorph. Culms leaning; 1500–2000 cm long; 10–30 mm diam.; woody; without nodal roots. Culm-internodes terete; hollow; 50–65 cm long; mid-green; distally pruinose. Lateral branches dendroid; arising from upper culm. Bud complement 1. Branch complement three, or several; in a clump; with 1 branch dominant; thinner than stem. Culm-sheaths deciduous but leaving a persistent girdle (this scabrid); 12–13 cm long; glabrous; auriculate; with obtuse auricles; with 2–3 mm high auricles; setose on shoulders; shoulders with 6–10 mm long hairs. Culm-sheath ligule 2–3 mm high; dentate. Culm-sheath blade triangular; narrower than sheath; erect; 13.5–14.5 cm long; 45–55 mm wide; glabrous on surface. Leaf-sheath oral hairs setose; 5–8 mm long. Leaf-sheath auricles erect; 0.7 mm long. Ligule an eciliate membrane; 1 mm long; erose. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 26.5–31 cm long; 39–60 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with spathaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between clusters.

FERTILE SPIKELETS Spikelets comprising 5–12 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 25–52 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 1–3 mm long; glabrous.

GLUMES Glumes two; persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume ovate. Lower glume apex acute. Upper glume ovate. Upper glume apex acute.

FLORETS Fertile lemma ovate; 9.5–12.5 mm long; without keel. Lemma margins ciliate. Lemma apex acuminate. Palea 10–13.5 mm long. Palea apex acute. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules absent. Anthers 6. Stigmas 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Papuasia.

NOTES Bambuseae. Widjaja 2002.

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