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Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Rytidosperma dendeniwae
HABIT Perennial; caespitose. Basal innovations extravaginal. Culms 9–16 cm long. Ligule a fringe of hairs. Leaf-blades deciduous at the ligule; 5.5–11 cm long; 0.6–1 mm wide. Leaf-blade surface pilose.
INFLORESCENCE Inflorescence a panicle; comprising 4–5(–7) fertile spikelets. Peduncle pilose above.
Panicle contracted; 1.5–2.5 cm long. Panicle axis pilose. Panicle branches pilose.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 4 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 7–9 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; similar; shorter than spikelet, or reaching apex of florets (then only the awns protuding). Lower glume 6–8 mm long; 1 length of upper glume. Lower glume surface glabrous. Upper glume 6–8 mm long; 0.7 length of adjacent fertile lemma; 0.9–1 length of spikelet. Upper glume surface glabrous.
FLORETS Fertile lemma 5–5.5 mm long. Lemma surface with marginal hair tufts; bearing 6 hair tufts in all. Lemma hairs 1–1.5 mm long. Lemma apex lobed; 2 -fid; with lobes 0–2.5 mm long; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; 5.25–7 mm long overall; with twisted column. Lateral lemma awns 1–1.25 mm long. Palea surface pilose; hairy on margins (in two tufts). Apical sterile florets resembling fertile though underdeveloped.
FLOWER Anthers 0.75–1 mm long; eventually exserted.
FRUIT Caryopsis with adherent pericarp.
DISTRIBUTION Asia-tropical: Papuasia.
NOTES Arundineae. Veldkamp 2000.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.