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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Glyceria formosensis

HABIT Perennial; culms solitary. Culms erect; 40–50 cm long; 4 -noded. Leaf-sheaths tubular for much of their length; with 1 of their length closed; 10–15 cm long; longer than adjacent culm internode; striately veined; scaberulous. Ligule an eciliate membrane; 2 mm long; truncate. Leaf-blades flat, or involute; 5–6 mm wide; light green. Leaf-blade surface puberulous; hairy on both sides. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle. Peduncle scaberulous above.

Panicle open; nodding; 10–20 cm long. Primary panicle branches 3–4 -nate; rebranched below middle; with lower 0.66 length of panicle; bearing 1–4 fertile spikelets on each lower branch. Panicle branches scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or oblong; laterally compressed; 7–10 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 2 mm long; 0.8 length of upper glume; membranous; much thinner on margins; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface smooth. Lower glume apex obtuse. Upper glume ovate; 2.5 mm long; 0.6–0.75 length of adjacent fertile lemma; membranous; with scarious margins; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume surface smooth. Upper glume apex obtuse.

FLORETS Fertile lemma ovate; 3.5–4.5 mm long; membranous; much thinner on margins; without keel; 7 -veined. Lemma lateral veins prominent; evenly spaced. Lemma surface scaberulous. Lemma apex entire, or erose; obtuse. Palea ovate; 0.9 length of lemma; 2 -veined. Palea keels scaberulous. Palea surface scaberulous. Palea apex emarginate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; united; oblong; fleshy; truncate. Anthers 3; 1 mm long; yellow.

FRUIT Caryopsis with adherent pericarp. Hilum linear.

DISTRIBUTION Asia-temperate: eastern Asia.

NOTES Meliceae. Ohwi 2005.

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