Deyeuxia salina

HABIT Perennial; caespitose; clumped loosely. Culms 30–70 cm long. Leaf-sheaths smooth. Ligule an eciliate membrane; 1.5–3.5 mm long; scaberulous on abaxial surface; obtuse. Leaf-blades flat, or conduplicate; 1–3.5 mm wide; grey-green. Leaf-blade surface scabrous; rough adaxially, or on both sides.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 4–12 cm long; 0.5–2 cm wide. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.5–4.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 0.5–0.66 length of lemma.

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 obtuse. Upper glume lanceolate; 1.1–1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex obtuse.

FLORETS Fertile lemma lanceolate; 3–4 mm long; membranous; without keel; 5 -veined. Lemma surface asperulous. Lemma apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.25–0.33 way up back of lemma; straight; 2–3 mm long overall; without a column. Rhachilla extension 1.5–2.5 mm long; pilose.

FLOWER Lodicules 2. Anthers 3; 1.5–2.5 mm long. Stigmas 2.

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

DISTRIBUTION Asia-temperate: Siberia, China, and Mongolia.

NOTES Aveneae. Tsvelev 1995.

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