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.

Phyllostachys makinoi

HABIT Perennial; caespitose. Rhizomes elongated; leptomorph. Culms erect; 1500–1800 cm long; 70–90 mm diam.; woody. Culm-internodes semiterete; with small lumen; 12–40 cm long; glaucous; smooth; distally pruinose. Culm-nodes with distinct supra-nodal ridge. Lateral branches dendroid. Branch complement two. Culm-sheaths chartaceous; brown and purple; distinctly mottled with last colour; glabrous. Culm-sheath ligule 3 mm high; ciliate. Culm-sheath blade linear; reflexed. Leaves cauline; 2–3 per branch. Leaf-sheaths 3–6 cm long; glabrous on surface. Leaf-sheath oral hairs setose; erect. Ligule a ciliolate membrane; 2–3 mm long. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.4–0.6 cm long. Leaf-blades lanceolate; 9–11 cm long; 13–18 mm wide. Leaf-blade venation with distinct cross veins. Leaf-blade surface glabrous; hairless except near base. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; fasciculate; with spathaceous subtending bracts; bracts 15–18 mm long; without axillary buds at base of spikelet; with ultimate bract subtending a compact bracteolate fascicle of spikelets, or with principal spatheoles embracing a compact fascicle of racemes, each subtended by a subsidiary bract; prophyllate below lateral spikelets.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1–2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 30 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous.

GLUMES Glumes both absent or obscure, or one the lower absent or obscure; persistent; shorter than spikelet. Upper glume lanceolate; 10–20 mm long; chartaceous. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 18–20 mm long; chartaceous; without keel; 15–17 -veined. Lemma lateral veins with cross-veins. Lemma apex acuminate. Palea lanceolate; 1 length of lemma; chartaceous; 12 -veined; 2-keeled. Palea keels ciliolate; adorned above.

FLOWER Lodicules 3; lanceolate; 2 mm long; ciliate; acute. Anthers 3; 10 mm long. Stigmas 3.

FRUIT Caryopsis with adherent pericarp; apiculate.

DISTRIBUTION Asia-temperate: China and eastern Asia.

NOTES Arundinarieae. 2nd Jap. Bam. 2001.

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