Oligostachyum spongiosum

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 1000 cm long; 40–60 mm diam.; woody. Culm-internodes terete; 20–40 cm long; distally mealy. Lateral branches dendroid. Branch complement three. Culm-sheaths brown; hispid; with dark brown hairs; hairy on margins; without auricles; glabrous on shoulders. Culm-sheath ligule 1 mm high; ciliolate. Culm-sheath blade triangular; as wide as sheath at base; erect; 1.5–3 cm long. Leaves 3–5 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking. Leaf-sheath auricles absent. Ligule a ciliolate membrane; 2–2.5 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 9–17 cm long; 10–20 mm wide. Leaf-blade venation with 8–10 secondary veins. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Flowering specimens unknown.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinarieae. Chu & Chao 2002.

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