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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 takedana
HABIT Perennial; caespitose. Rhizomes short. Stolons absent, or present. Butt sheaths pubescent; persistent and investing base of culm; with fibrous dead sheaths. Culms 15–35 cm long; 0.8–1.3 mm diam. Leaves mostly basal. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.5–0.66 mm long; brown; truncate. Leaf-blades flat; 4–15 cm long; 2.75–4 mm wide; pruinose. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex acute, or acuminate.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate; 4–10 cm long; 2–4 cm wide. Primary panicle branches 2–3 -nate; bearing 1–3 fertile spikelets on each lower branch. Panicle axis smooth, or scaberulous. Panicle branches capillary; scaberulous.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 6–10 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.7–1 mm long; scaberulous. Floret callus glabrous.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3–4.5 mm long; 0.8–1 length of upper glume; chartaceous; 1-keeled; 1 -veined. Lower glume primary vein smooth, or scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 3.2–5.5 mm long; 0.5–0.66 length of adjacent fertile lemma; chartaceous; 1-keeled; 3 -veined. Upper glume primary vein smooth, or scaberulous. Upper glume apex acute.
FLORETS Fertile lemma lanceolate, or ovate; 6–8 mm long; chartaceous; much thinner on margins; light brown; keeled; lightly keeled; 3–5 -veined. Lemma midvein without distinctive roughness, or scaberulous. Lemma surface asperulous. Lemma apex acute, or acuminate; muticous. Palea 1 length of lemma; 2 -veined. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2. Anthers 3; 2.5–3.5 mm long. Ovary pubescent on apex.
FRUIT Caryopsis with adherent pericarp; 3.5 mm long; hairy at apex. Hilum linear.
DISTRIBUTION Asia-temperate: Soviet far east and eastern Asia.
NOTES Poeae. Koyama 1994.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
