Panicum notatum

HABIT Perennial. Culms decumbent, or rambling; 8–200 cm long; rooting from lower nodes. Culm-nodes glabrous. Lateral branches ample. Leaf-sheaths without keel; glabrous on surface, or pubescent; outer margin hairy. Ligule a ciliolate membrane; 0.2–0.4 mm long. Collar glabrous. Leaf-blade base cordate. Leaf-blades lanceolate; 6–15 cm long; 10–27 mm wide. Leaf-blade surface glabrous, or puberulous, or hirsute; sparsely hairy. Leaf-blade margins scabrous; ciliate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 10–40 cm long. Primary panicle branches spreading. Panicle branches smooth, or scabrous; glabrous in axils, or bearded in axils.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; subacute, or acute; 2.2–2.7 mm long; falling entire.

GLUMES Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface glabrous, or pubescent. Lower glume apex obtuse. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5–7 -veined. Upper glume surface glabrous, or pubescent. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5–7 -veined; acute. Fertile lemma elliptic; dorsally compressed; 1.7–2.1 mm long; indurate; dark brown; shiny; without keel. Lemma margins involute. Lemma apex obtuse, or acute. Palea involute; indurate.

FLOWER Anthers 3; 1.6–1.9 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 1.5–1.6 mm long.

DISTRIBUTION Asia-temperate: China and eastern Asia. Asia-tropical: India, Indo-China, and Malesia.

NOTES Paniceae. Fl Ceyl 1993.

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