Panicum caudiglume

HABIT Annual. Culms geniculately ascending; 30–80 cm long; 4 -noded. Ligule a ciliate membrane. Leaf-blades 7–14 cm long; 3–7 mm wide. Leaf-blade surface pilose; hairy on both sides; with tubercle-based hairs. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; loose; 20–25 cm long. Primary panicle branches spreading; 1 -nate. Panicle branches capillary; scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 2.5 mm long; falling entire. Rhachilla internodes elongated between glumes. Rhachilla elongation 0.5 mm long.

GLUMES Glumes dissimilar; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume ovate; 0.75 length of spikelet; membranous; without keels; 5 -veined. Lower glume lateral veins ribbed. Lower glume surface scabrous; rough on veins. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 0.5–1 mm long. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume lateral veins ribbed. Upper glume apex acuminate.

FLORETS Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5 -veined; acuminate. Fertile lemma oblong; dorsally compressed; 1.5 mm long; indurate; pallid; shiny; without keel. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Paniceae. Hack 1994.

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