GrassBase - The Online World Grass Flora

Descriptions

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

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

Perrierbambus

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 500–550–600 cm long; woody. Culm-internodes terete. Lateral branches dendroid. Branch complement many (1/1); thinner than stem. Ligule a ciliolate membrane. Leaf-blades deciduous at the ligule; lanceolate (1), or elliptic (1), or ovate (1). Leaf-blade venation without cross veins (1), or with distinct cross veins (1).

INFLORESCENCE Synflorescence bractiferous; scanty; with foliaceous subtending bracts; without axillary buds at base of spikelet.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate (1), or elliptic (1); dorsally compressed; 8.3–12.18–16.8 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes one the lower absent or obscure (1), or two (1); persistent; shorter than spikelet. Lower glume ovate (1/1); 0.8 length of upper glume; chartaceous (1/1); without keels (1/1); 11 -veined (1/1). Lower glume surface without pits (1/1). Lower glume apex acuminate (1/1). Upper glume oblong (1), or ovate (1); 0.6–0.65–0.7 length of adjacent fertile lemma; chartaceous; without keels; 13–15 -veined (1), or 17 -veined (1). Upper glume lateral veins with cross-veins (1/1). Upper glume surface smooth (1), or asperulous (1). Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate (1), or ovate (1); chartaceous; without keel; wingless; 17 -veined (1), or 19 -veined (1). Lemma surface smooth (1), or scaberulous (1); unwrinkled; without grooves; glabrous (1), or puberulous (1). Lemma apex acute (1), or acuminate (1). Palea 1 length of lemma; chartaceous; 10–11 -veined (1), or 12 -veined, or 13–14 -veined (1); without keels (1), or 2-keeled (1).

FLOWER Lodicules 3. Anthers 6. Stigmas 2. Ovary unappendaged (1), or umbonate (1); pubescent on apex (1/1).

FRUIT Caryopsis with adherent pericarp; obovoid; apex rostrate (1/1).

DISTRIBUTION Africa.

Please cite this publication as detailed in How to Cite Version: 27th January 2014.