Hibanobambusa kamitegensis

HABIT Perennial; caespitose. Rhizomes elongated; leptomorph. Culms erect; 300–400 cm long; 10 mm diam.; woody. Culm-internodes semiterete; hollow. Lateral branches dendroid. Bud complement 1. Branch complement one. Culm-sheaths deciduous; puberulous, or pubescent, or pilose; with reflexed hairs; setose on shoulders. Culm-sheath ligule 1.5 mm high. Culm-sheath blade lanceolate; reflexed. Leaves cauline. Leaf-sheaths pubescent. Leaf-sheath oral hairs setose; spreading; 10 mm long. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.8–1.5 cm long. Leaf-blades lanceolate, or ovate; 17.2–27.4 cm long; 40–70 mm wide. Leaf-blade venation with distinct cross veins.

INFLORESCENCE Flowering specimens unknown.

DISTRIBUTION Asia-temperate: eastern Asia.

NOTES Arundinarieae. Koba. & Waka. 2013. Hibanobambusa tranquillans

HABIT Perennial; caespitose. Rhizomes elongated; leptomorph. Culms erect; 300–400 cm long; 20 mm diam.; woody. Culm-internodes semiterete; smooth. Lateral branches dendroid. Culm-sheaths coriaceous; brown; pilose; setose on shoulders. Culm-sheath ligule 1 mm high; ciliolate. Culm-sheath blade linear; erect. Leaves cauline. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs setose; spreading. Ligule a ciliolate membrane; 2 mm long; truncate. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate, or oblong; 15–20 cm long; 40–50 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; fasciculate; with spathaceous subtending bracts; bracts 35–40 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 2–5 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 6 mm long; pubescent.

GLUMES Glumes one the lower absent or obscure; persistent; shorter than spikelet. Upper glume ovate; 12–14 mm long; chartaceous; 9–11 -veined. Upper glume lateral veins with cross-veins. Upper glume apex acute.

FLORETS Fertile lemma ovate; 13–20 mm long; chartaceous; without keel; 20 -veined. Lemma lateral veins with cross-veins. Lemma apex acuminate. Palea lanceolate; 12–13 mm long; chartaceous; 10–12 -veined; 2-keeled. Palea keels ciliolate; adorned above.

FLOWER Lodicules 3; ovate; 2.5–3 mm long; glabrous; obtuse. Anthers 6; 9 mm long. Stigmas 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: eastern Asia.

NOTES Arundinarieae. Ind Jap. Bam. 2001.

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