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Descriptions

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

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

Loudetiopsis scaettae

HABIT Perennial; caespitose. Culms 100–200 cm long. Ligule a fringe of hairs. Leaf-blades convolute; 25–40 cm long; 2–3 mm wide.

INFLORESCENCE Inflorescence a panicle; bearing juvenile spikelets at emergence.

Panicle open; lanceolate; 8–25 cm long. Panicle branches straight, or flexuous.

Spikelets in threes. Fertile spikelets pedicelled; 3 in the cluster. Pedicels subequal; 1–2 mm long; glabrous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed slightly; 9–13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.7 mm long; pubescent; 2-toothed.

GLUMES Glumes persistent; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 5–8 mm long; 0.5–0.66 length of spikelet; chartaceous; dark brown; without keels; 3 -veined. Lower glume surface glabrous, or hispid; hairy on veins (sparsely); with tubercle-based hairs. Lower glume apex obtuse. Upper glume lanceolate; 9–13 mm long; 1 length of spikelet; chartaceous; dark brown; without keels; 3 -veined. Upper glume surface glabrous. Upper glume apex obtuse.

FLORETS Basal sterile florets male; with palea; separately deciduous. Lemma of lower sterile floret similar to upper glume; lanceolate; 9–13 mm long; chartaceous; 3 -veined; acute. Palea of lower sterile floret pilose. Fertile lemma elliptic; 5–7 mm long; coriaceous; without keel; 7 -veined. Lemma surface pubescent. Lemma margins involute; interlocking with palea keels. Lemma apex lobed; 2 -fid; with lanceolate lobes; incised 0.15 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; flat below; 4–7 mm long overall; with twisted column; deciduous; abscissing from top of lemma. Palea 2 -veined. Palea keels approximate; thickened.

FLOWER Anthers 2.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Africa: west tropical.

NOTES Arundinelleae. FWTA.

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