GrassBase - The Online World Grass Flora


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

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

Acidosasa notata

HABIT Perennial. Rhizomes short; pachymorph. Culms erect; 200–300 cm long; 15–20 mm diam.; woody. Culm-internodes terete; hollow; glaucous. Lateral branches dendroid. Branch complement three. Culm-sheaths deciduous; hispid; hairy on margins; auriculate; with obtuse auricles; with 4 mm high auricles; setose on shoulders; shoulders with 7 mm long hairs. Culm-sheath ligule 6 mm high; ciliate. Culm-sheath blade lanceolate; glabrous on surface. Leaves 2–5 per branch. Leaf-sheaths glabrous on surface, or pubescent. Leaf-sheath oral hairs ciliate; deciduous. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 4 mm long; erose. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 11–21 cm long; 3–6 mm wide; dark green and mid-green; discolorous with last colour beneath. Leaf-blade venation with 10–14 secondary veins. Leaf-blade surface glabrous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence composed of racemes, or comprising only a few spikelets.

Racemes 1; single; bearing few fertile spikelets; bearing 3–5 fertile spikelets on each.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2–13 mm long; glabrous.

FERTILE SPIKELETS Spikelets comprising 3–10 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 25–70 mm long; 3–6 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 7 mm long; pubescent.

GLUMES Glumes two; persistent; similar; shorter than spikelet. Lower glume ovate; 6–19 mm long; chartaceous; without keels. Lower glume apex acute. Upper glume ovate; 10–18 mm long; chartaceous; without keels. Upper glume surface glabrous. Upper glume apex acute; mucronate.

FLORETS Fertile lemma ovate; 16–19 mm long; chartaceous; without keel; 13–19 -veined. Lemma lateral veins with cross-veins. Lemma surface pubescent. Lemma apex acuminate. Palea 13–15 mm long. Palea surface pubescent. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; 4–5 mm long; glabrous. Anthers 6; 8–12 mm long; yellow. Stigmas 3.

FRUIT Caryopsis with adherent pericarp; apex unappendaged.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinarieae. Chao & Zhu 2002.

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