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Descriptions

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

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

Panicum margaritiferum

HABIT Perennial; caespitose. Culms erect; 60–150 cm long. Ligule a ciliate membrane. Leaf-blades 18–30 cm long; 3–10 mm wide. Leaf-blade apex pungent.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 10–20 cm long. Panicle branches stiff.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 2–3 mm long; falling entire; readily shedding fertile florets.

GLUMES Glumes similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.75–1 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex acute.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5 -veined; acute. Fertile lemma oblong; dorsally compressed; 1.5–2.5 mm long; chartaceous; pallid; without keel. Lemma surface tuberculate (verruculose). Lemma margins involute. Lemma apex obtuse. Palea involute; chartaceous. Palea surface tuberculate (verruculose).

DISTRIBUTION Africa: west-central tropical and southern tropical.

NOTES Paniceae. FZ.

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