Deschampsia koelerioides

HABIT Perennial; caespitose. Culms erect; 10–40 cm long. Leaves mostly basal. Ligule an eciliate membrane; 4–8 mm long; scarious. Leaf-blades 2–20 cm long; 2–3 mm wide. Leaf-blade surface ribbed; scaberulous; rough adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted, or spiciform; oblong, or ovate; 2–5 cm long; 1–1.5 cm wide.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; pilose. Floret callus pilose. Floret callus hairs 0.33 length of lemma.

GLUMES Glumes persistent; similar; exceeding apex of florets, or reaching apex of florets; similar to fertile lemma in texture; shiny. Lower glume oblong; 3–3.6 mm long; 0.8 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex entire, or erose; obtuse, or acute. Upper glume elliptic; 3.6–4.2 mm long; 1–1.1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex entire, or erose; obtuse, or acute.

FLORETS Fertile lemma elliptic, or oblong; 3.3–4.3 mm long; membranous; shiny; without keel; 5 -veined. Lemma apex dentate; 2 -fid; truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1–0.3 way up back of lemma; straight; 2.5–4 mm long overall; clearly exserted from spikelet.

FLOWER Lodicules 2; membranous. Anthers 3. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Siberia, Soviet Middle Asia, western Asia, China, and Mongolia. Asia-tropical: India.

NOTES Aveneae. Fl Pak 1993.

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