Panicum amoenum

HABIT Perennial. Culms rambling; 100–180 cm long; without nodal roots, or rooting from lower nodes. Culm-nodes glabrous. Leaves cauline. Leaf-sheaths glabrous on surface; outer margin hairy. Ligule a ciliolate membrane. Leaf-blade base cordate. Leaf-blades 10–20 cm long; 10–12 mm wide; stiff. Leaf-blade midrib conspicuous. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; pyramidal; 30–40 cm long. Primary panicle branches whorled at lower nodes. Panicle axis angular; smooth to scaberulous. Panicle branches capillary; scaberulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; subacute; 1.5–1.9 mm long; falling entire.

GLUMES Glumes shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.9–1.2 mm long; 0.66 length of spikelet; membranous; without keels; 3 -veined. Lower glume apex obtuse. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex obtuse.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; oblong; 1.2–1.5 mm long; 0.8 length of spikelet; membranous; 3–5 -veined; obtuse. Fertile lemma oblong, or ovate; dorsally compressed; 1.5–1.9 mm long; indurate; pallid; shiny; without keel. Lemma surface smooth. Lemma margins involute. Lemma apex obtuse, or acute. Palea involute; 1–1.3 mm long; indurate.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China. Asia-tropical: Indo-China.

NOTES Paniceae. Fl Indo-Chine 1996.

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