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.

Temburongia simplex

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; pendulous at the tip; 1000 cm long; 7–30 mm diam.; woody. Culm-internodes terete; hollow; 20–30 cm long; light green; distally pruinose and glabrous, or pubescent. Culm-nodes flanged. Lateral branches dendroid. Bud complement 1. Branch complement several; in a clump; with 1 branch dominant. Culm-sheaths 15.5 cm long; 4 times as long as wide; purple; glabrous; truncate at apex; auriculate; with obtuse auricles. Culm-sheath ligule 0.2 mm high. Culm-sheath blade lanceolate; demarcated but persistent; erect; 6–13 cm long; 9–15 mm wide; glabrous on surface. Leaves 10–19 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath auricles erect (on one side only); 2–3 mm long. Ligule an eciliate membrane; 0.5–1 mm long. Leaf-blade base truncate; with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 7–30 cm long; 9–32 mm wide. Leaf-blade surface pubescent; hairy abaxially. Leaf-blade apex attenuate.

INFLORESCENCE Synflorescence bractiferous; linear, or clustered at the nodes; in untidy tufts (of 1–3 spikelets); 30–40 cm long; open; with glumaceous subtending bracts; without axillary buds at base of spikelet; prophyllate below lateral spikelets; 3–5 cm long overall.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 7–17 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation 4 mm long.

GLUMES Glumes several; 3 empty glumes; persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 2 mm long; scarious; without keels. Lower glume apex acute. Upper glume ovate; 7 mm long; scarious; without keels. Upper glume apex acute.

FLORETS Fertile lemma ovate; 7 mm long; coriaceous; without keel. Lemma apex obtuse. Palea 8.5 mm long; coriaceous. Rhachilla extension 8 mm long. Apical sterile florets 1 in number; barren; linear; 4 mm long.

FLOWER Lodicules 3; ovate; obtuse, or acute. Anthers 6. Stigmas 3. Ovary umbonate; glabrous.

FRUIT Caryopsis with adherent pericarp; oblong; 4–5 mm long.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Drans & Wong.

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