Pleioblastus argenteostriatus

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 20–40 cm long; 1–2 mm diam.; woody. Culm-internodes terete; hollow; distally glabrous. Culm-nodes glabrous, or pubescent. Lateral branches suffrutescent. Culm-sheaths glabrous. Leaves distichous. Leaf-sheaths glabrous on surface, or puberulous. Leaf-sheath oral hairs setose; pale. Ligule an eciliate membrane, or a ciliolate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 3–7 cm long; 3–10 mm wide. Leaf-blade surface glabrous, or puberulous; sparsely hairy; hairy on both sides. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence comprising only a few spikelets.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 40–60 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 5–7 mm long; eventually visible between lemmas.

GLUMES Glumes two; persistent; similar; shorter than spikelet. Lower glume lanceolate; 8–10 mm long; chartaceous; without keels. Lower glume apex acute. Upper glume lanceolate; 8–10 mm long; chartaceous; without keels. Upper glume apex acute.

FLORETS Fertile lemma ovate; 13–16 mm long; chartaceous; without keel; 5–7 -veined. Lemma lateral veins with cross-veins. Lemma apex acuminate. Palea 1 length of lemma. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3. Anthers 3. Stigmas 3.

FRUIT Caryopsis with adherent pericarp; apex unappendaged.

DISTRIBUTION Asia-temperate: Caucasus, China, and eastern Asia. Pacific: northwestern.

NOTES Arundinarieae. Ind. Jap. Bam. 2002.

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