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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Schizostachyum tessellatum

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms 200 cm long; woody. Culm-internodes terete; hollow; distally glabrous. Lateral branches dendroid. Leaves 5–6 per branch. Leaf-sheaths striately veined; glabrous on surface; outer margin hairy. Ligule a ciliate membrane. Leaf-blade base cordate; with a brief petiole-like connection to sheath; petiole 0.3–0.5 cm long. Leaf-blades deciduous at the ligule; lanceolate; 25–30 cm long; 50–60 mm wide; light green, or mid-green. Leaf-blade venation with 20–22 secondary veins; with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex attenuate.

INFLORESCENCE Synflorescence bractiferous; linear; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate; subterete; 15–18 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes several; 4–6 empty glumes; persistent; shorter than spikelet. Lower glume ovate; 3–4 mm long. Upper glume ovate; 9–11 mm long. Upper glume margins ciliate. Upper glume apex acute; muticous.

FLORETS Fertile lemma ovate; 12–13 mm long; chartaceous; without keel; 11 -veined. Lemma margins convolute; covering most of palea; ciliate. Lemma apex acuminate; mucronate. Palea oblong; tightly convolute around flower; 1 length of lemma; chartaceous; 2-keeled. Palea keels ciliate. Palea apex entire. Rhachilla extension 2.5 mm long; glabrous. Apical sterile florets 1 in number; male, or barren; ovate; 10–11 mm long. Apical sterile lemmas pilose (on margin); mucronate.

FLOWER Lodicules 3. Anthers 6; 5.5 mm long; anther tip apiculate. Stigmas 3. Ovary with a steeple-like appendage.

FRUIT Caryopsis with free brittle pericarp.

DISTRIBUTION Asia-tropical: Papuasia. Pacific: north-central.

NOTES Bambuseae. Camus 1995.

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