Panicum longipedicellatum

HABIT Perennial. Culms geniculately ascending; 100–160 cm long. Culm-internodes distally glabrous, or hispid. Culm-nodes bearded. Leaf-sheaths narrower than blade at the collar; hispid; with tubercle-based hairs. Ligule a ciliate membrane; 3 mm long. Leaf-blades linear, or lanceolate; 35–41 cm long; 23–36 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle; embraced at base by subtending leaf.

Panicle open; ovate; 40 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 10–40 mm long; scabrous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; acute; 4–4.5 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 lateral veins prominent. Lower glume surface tuberculate (papillose). Lower glume margins ciliate. Lower glume apex obtuse, or 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 elliptic; dorsally compressed; 3.5 mm long; indurate; without keel. Lemma surface striate. Lemma margins involute. Palea involute; indurate.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Fl Cat 1995.

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