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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.
Festuca formosana
HABIT Perennial. Culms 40 cm long; 1 mm diam. Ligule an eciliate membrane; 2 mm long; scaberulous on abaxial surface; truncate. Leaf-blades 15 cm long; 6–15 mm wide. Leaf-blade apex acuminate.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1.5–6 mm long.
FERTILE SPIKELETS Spikelets comprising 1–2 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 8 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; dissimilar; shorter than spikelet. Lower glume lanceolate; 3 mm long; 0.8–0.9 length of upper glume; chartaceous; much thinner on margins; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Lower glume apex acute. Upper glume lanceolate; 3.5 mm long; 0.4 length of adjacent fertile lemma; chartaceous; without keels; 3 -veined. Upper glume surface scabrous. Upper glume apex acute.
FLORETS Fertile lemma elliptic; 8 mm long; membranous; without keel; 5 -veined. Lemma apex acute. Palea 7 mm long; 0.9 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Anthers 3; 3 mm long. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp; fusiform; 5 mm long; hairy at apex. Hilum linear.
DISTRIBUTION Asia-temperate: eastern Asia.
NOTES Poeae. Taiwan Gr 1997.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.