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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.
Sasa tenuifolia
HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 30–40 cm long; 2–2.5 mm diam.; woody. Culm-internodes terete; hollow; distally glabrous. Culm-nodes glabrous. Lateral branches suffrutescent. Bud complement 1. Branch complement one; solitary; as thick as stem. Leaves 1–14 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs scanty, or lacking. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 4–14 cm long; 12–23 mm wide; mid-green and glaucous; discolorous with last colour beneath. Leaf-blade venation with 8–10 secondary veins. Leaf-blade surface scabrous; pubescent; hairy abaxially. Leaf-blade apex attenuate.
INFLORESCENCE Inflorescence composed of racemes.
Racemes 1; single. Rhachis pubescent on surface.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 9–12 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; scarious; without keels. Lower glume apex acute. Upper glume ovate; scarious; without keels. Upper glume apex acute.
FLORETS Fertile lemma ovate; 5.5–7 mm long; chartaceous; without keel. Lemma apex acute. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 3. Anthers 6. Stigmas 3.
FRUIT Caryopsis with adherent pericarp; apex unappendaged.
DISTRIBUTION Asia-temperate: eastern Asia.
NOTES Arundinarieae. Nakai 1996.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.