Deyeuxia curta

HABIT Perennial; caespitose. Culms erect; 3–8 cm long; 1 -noded. Ligule a ciliolate membrane; 0.3–0.5 mm long. Leaf-blades filiform; convolute; 1–1.8 cm long; 0.2 mm wide. Leaf-blade surface pubescent.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; oblong; 1–2.5 cm long; 0.5–1 cm wide.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4.5–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous, or pilose.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 5.5–6 mm long; 1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acuminate. Upper glume lanceolate; 5–5.5 mm long; 1.1–1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume surface asperulous. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; 4.5 mm long; membranous; without keel. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; geniculate; 4–7.5 mm long overall; with twisted column. Palea 2.5–3 mm long. Rhachilla extension 0.25–0.5 length of fertile floret; pilose.

FLOWER Lodicules 2. Anthers 3; 0.2–0.3 mm long. Stigmas 2.

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

DISTRIBUTION South America: western South America and southern South America.

NOTES Aveneae. Turpe 1995.

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