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.

Loudetiopsis chevalieri

HABIT Annual; caespitose. Culms erect; 40–70 cm long; 2–3 -noded. Culm-internodes distally glabrous. Culm-nodes glabrous. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades flat, or involute; 15–30 cm long; 2–4 mm wide. Leaf-blade surface pubescent; hairy adaxially. Leaf-blade apex attenuate; filiform.

INFLORESCENCE Inflorescence a panicle; comprising 6–24 fertile spikelets.

Panicle open, or contracted; oblong; 8–16 cm long. Primary panicle branches 1–4 -nate; 3–6 cm long. Panicle branches capillary; scabrous; villous; hairy at tip; with tubercle-based hairs.

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

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed slightly; 18–20 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; bearded; 2-toothed.

GLUMES Glumes persistent; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 10–12 mm long; 0.5–0.66 length of spikelet; chartaceous; yellow; without keels; 3 -veined. Lower glume surface setose; hairy on veins; with tubercle-based hairs. Lower glume hairs white. Lower glume apex obtuse. Upper glume lanceolate; 18–20 mm long; 1 length of spikelet; chartaceous; yellow; without keels; 3 -veined. Upper glume surface setose; hairy on veins; with tubercle-based hairs. Upper glume apex obtuse.

FLORETS Basal sterile florets male; with palea; separately deciduous. Lemma of lower sterile floret similar to upper glume; lanceolate; 12.5–14 mm long; 0.7–0.8 length of spikelet; chartaceous; 3 -veined; acute. Palea of lower sterile floret 0.6–0.7 length of lemma; winged on keels. Fertile lemma linear; 8–8.5 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 0.1 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; flat below; 70–120 mm long overall; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 25–35 mm long; pubescent. Palea 2 -veined. Palea keels approximate; thickened.

FLOWER Anthers 2; 3–4 mm long.

FRUIT Caryopsis with adherent pericarp; linear; 5 mm long.

DISTRIBUTION Africa: west-central tropical and northeast tropical.

NOTES Arundinelleae. FTA.

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