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Descriptions

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

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

Hickelia perrieri

HABIT Perennial. Culms rambling; 400–600 cm long; 40–60 mm diam.; woody. Culm-internodes terete; with small lumen. Lateral branches dendroid. Bud complement 1. Branch complement many; with 1 branch dominant; thinner than stem. Culm-sheaths glabrous. Culm-sheath blade lanceolate; erect; 15 cm long; 30 mm wide. Leaf-sheaths glabrous on surface; outer margin hairy. Ligule a ciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 3.5–11 cm long; 5–9 mm wide. Leaf-blade venation without cross veins. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; scanty; 3–5 cm long; with glumaceous subtending bracts; without axillary buds at base of spikelet.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; acuminate; 15–16 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes several; 3–4 empty glumes; lower persistent, upper deciduous (with floret); similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.6–0.8 length of upper glume; chartaceous; without keels; 21–23 -veined. Lower glume surface pubescent; hairy above. Lower glume margins ciliolate. Lower glume hairs tawny. Lower glume apex acuminate. Upper glume ovate; 9–14 mm long; indurate; without keels; 9 -veined. Upper glume lateral veins with cross-veins. Upper glume surface pubescent; hairy above. Upper glume margins ciliolate. Upper glume hairs tawny. Upper glume apex cuspidate.

FLORETS Fertile lemma ovate; 14–15 mm long; indurate; shiny; without keel; 9–11 -veined. Lemma lateral veins with cross-veins. Lemma surface pubescent; hairy above. Lemma apex cuspidate; mucronate. Palea ovate; 12 mm long; 0.9 length of lemma; coriaceous; 9 -veined. Palea keels contiguous above a sulcus. Palea surface pubescent; hairy on back. Rhachilla extension 0.2–0.4 length of fertile floret.

FLOWER Lodicules 3. Anthers 6; 8–9 mm long. Stigmas 3. Ovary umbonate; pubescent on apex.

FRUIT Caryopsis with tardily free pericarp; ovoid; hairy at apex.

DISTRIBUTION Africa: western Indian ocean.

NOTES Bambuseae. Camus.

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