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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.
Capillipedium duongii
HABIT Perennial. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms geniculately ascending; 50–60 cm long. Culm-internodes distally glabrous. Culm-nodes pubescent. Leaf-sheaths mostly shorter than adjacent culm internode; pubescent. Ligule a ciliolate membrane; 0.3 mm long. Leaf-blades linear, or lanceolate; 5–6 mm wide. Leaf-blade surface pilose; hairy on both sides.
INFLORESCENCE Inflorescence a panicle with branches tipped by a raceme.
Panicle open; lanceolate; 12 cm long; 1–1.5 cm wide. Panicle branches capillary; pubescent; bearded in axils.
Racemes bearing a triad of spikelets; 1 fertile spikelets on each. Rhachis obsolete.
Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels linear; 1.7 mm long; with a translucent median line (also present in internodes); glabrous.
STERILE SPIKELETS Companion sterile spikelets well-developed; male; lanceolate; 2.1–2.3 mm long; as long as fertile; separately deciduous. Companion sterile spikelet lemmas enclosed by glumes.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 2.2–2.5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pubescent; base obtuse. Spikelet callus hairs 0.3 mm long.
GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; membranous; 2-keeled; keeled obtusely; 7 -veined. Lower glume lateral veins obscure. Lower glume surface concave; pilose; hairy above. Upper glume ovate; 1-keeled; 3 -veined. Upper glume primary vein obscure. Upper glume surface pilose; hairy above.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline. Fertile lemma linear; hyaline; without keel; 0 -veined. Lemma apex entire; acute; awned; 1 -awned. Principal lemma awn geniculate; 11–12 mm long overall; with twisted column. Column of lemma awn scabrous; glabrous. Palea absent or minute.
FLOWER Anthers 3; 1.5 mm long.
DISTRIBUTION Asia-tropical: Indo-China.
NOTES Andropogoneae. Nguyen 2006.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
