Deyeuxia curvula

HABIT Perennial; cushion forming. Rhizomes short. Culms erect; 5–30 cm long. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1.2–2 mm long. Leaf-blades curved; involute; 1–4 cm long; 1–2 mm wide; stiff. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins pubescent. Leaf-blade apex pungent.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear; 1–3 cm long; 0.7–1.6 cm wide.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels glabrous.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4.6–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.5–1 mm long.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 4.6–5 mm long; 1.3–1.5 length of adjacent fertile lemma; membranous; 1-keeled. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 3–3.7 mm long; membranous; without keel. Lemma apex dentate; 3 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.4–0.5 way up back of lemma; straight, or flexuous; 1.5 mm long overall. Rhachilla extension 1.8–2.3 mm long; pilose.

FLOWER Lodicules 2. Anthers 3. 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. Tovar 1995.

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