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.

Sasa pubiculmis

HABIT Perennial; caespitose. Rhizomes elongated; leptomorph. Culms erect; 40 cm long; 2.5–3.5 mm diam.; woody. Culm-internodes terete; hollow; striate; distally pubescent; with reflexed hairs. Culm-nodes pubescent. Lateral branches suffrutescent. Bud complement 1. Branch complement one; solitary; as thick as stem. Culm-sheaths 1 length of internode; glabrous, or puberulous; with reflexed hairs. Culm-sheath blade lanceolate; 0.3–0.4 cm long. Leaves 2–3 per branch. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 16–21 cm long; 24–36 mm wide; mid-green. Leaf-blade surface scabrous; glabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 16 cm long; 15 cm wide.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 5–9 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 10–20 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 0.5–1.5 mm long; scarious; without keels. Lower glume surface pilose. Lower glume apex acute. Upper glume ovate; 4–5 mm long; scarious; without keels. Upper glume surface pilose. Upper glume apex acute.

FLORETS Fertile lemma ovate; 8–10 mm long; chartaceous; purple; without keel. Lemma margins ciliolate. Lemma apex acute. Palea 7–8 mm long. Palea keels ciliate. Palea surface pubescent; hairy on back. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; ciliate. Anthers 6; yellow. 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.