Deyeuxia mollis

HABIT Perennial; caespitose; clumped loosely. Basal innovations extravaginal and intravaginal. Culms 5–20 cm long. Leaf-sheaths pubescent. Ligule an eciliate membrane. Leaf-blades curved; involute; 3–5 cm long; 1–2 mm wide. Leaf-blade surface pubescent. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; elliptic, or oblong; 4–5 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.5 mm long.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume ovate; 7 mm long; 1.2 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 6 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 6.5 mm long; membranous; without keel; 5 -veined. Lemma apex dentate; 4 -fid; with outer lobes longer; awned; 5 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; geniculate; 10 mm long overall; with twisted column. Lateral lemma awns arising on apex of lobes; 1–2 mm long. Palea 0.5 length of lemma. Rhachilla extension 0.33–0.5 length of fertile floret; pilose; with 3 mm long hairs.

FLOWER Lodicules 2. Anthers 3; 0.5 mm long. Stigmas 2.

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

DISTRIBUTION South America: western South America.

NOTES Aveneae. Pilger 1995.

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