Deyeuxia bogotensis

HABIT Perennial. Culms 80 cm long. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; obtuse. Leaf-blades convolute; 6–30 cm long; 2–3 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 17 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus sparsely hairy.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 4 mm long; 1.1 length of adjacent fertile lemma; membranous; purple; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 3.5 mm long; membranous; without keel; 5 -veined. Lemma surface scaberulous. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.25–0.33 way up back of lemma; geniculate; 4 mm long overall; with twisted column. Rhachilla extension pilose.

FLOWER Lodicules 2. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.

DISTRIBUTION South America: Mesoamericana, northern South America, and western South America.

NOTES Aveneae. Pilger 1995.

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