Panicum pseudisachne

HABIT Perennial. Rhizomes elongated; knotty. Culms erect; 20–70 cm long. Ligule a ciliate membrane. Leaf-blade base cordate. Leaf-blades lanceolate; 4–10 cm long; 3–8 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acute, or acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 5–10 cm long. Primary panicle branches spreading; profusely divided. Panicle branches capillary.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate, or orbicular; dorsally compressed; 1.1–1.9 mm long; falling entire.

GLUMES Glumes shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.5–0.66 length of spikelet; membranous; without keels; 3 -veined. Lower glume apex acute. Upper glume ovate; 0.9–1 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface pubescent. 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; pubescent; acute. Fertile lemma elliptic; dorsally compressed; 1.1–1.9 mm long; indurate; pallid; without keel. Lemma surface scabrous; rough above. Lemma margins involute. Palea involute; indurate.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Gr Bahia 1995.

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