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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 chillagoanum
HABIT Annual; caespitose. Culms erect; 15–60 cm long; 2–3 -noded. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode. Leaf-sheath oral hairs ciliate. Ligule a ciliate membrane; 1 mm long. Leaf-blades 2–12 cm long; 2–5 mm wide. Leaf-blade surface pilose; sparsely hairy; with tubercle-based hairs. Leaf-blade margins scaberulous.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate; 4–25 cm long. Primary panicle branches spreading; 3–14 cm long; bearing 15–20 fertile spikelets on each lower branch. Panicle axis smooth. Panicle branches scabrous.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 3–12 mm long; scabrous.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 2.1–2.7 mm long; 0.8–1 mm wide; falling entire. Rhachilla internodes elongated between glumes.
GLUMES Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.9–1.2 mm long; 0.4–0.5 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 acuminate.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; acuminate. Fertile lemma oblong; dorsally compressed; 1.5 mm long; indurate; light brown; without keel. Lemma margins involute. Palea involute; indurate.
FLOWER Anthers 3; 1.5 mm long.
DISTRIBUTION Australasia: Australia.
NOTES Paniceae. Simon 1995.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.