Deyeuxia cabrerae

HABIT Perennial; caespitose. Culms 8–18 cm long. Leaf-sheaths keeled. Ligule an eciliate membrane; 3–4 mm long. Leaf-blades involute; 4–10 cm long; 1–2 mm wide; stiff. Leaf-blade margins ciliate. Leaf-blade apex pungent.

INFLORESCENCE Inflorescence a panicle; shorter than basal leaves.

Panicle contracted; linear; 3–6 cm long. Panicle branches pubescent.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels pubescent.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 7–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 1–1.5 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; 7–8 mm long; 1.3–1.4 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 5–6 mm long; membranous; without keel. Lemma apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.33–0.5 way up back of lemma; straight; 4–4.5 mm long overall. Rhachilla extension pilose.

FLOWER Lodicules 2. Anthers 3. Stigmas 2.

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

DISTRIBUTION South America: southern South America.

NOTES Aveneae. Tovar 1995.

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