Deschampsia klossii

HABIT Perennial; caespitose; clumped densely. Culms erect; 50–120 cm long. Lateral branches lacking. Ligule an eciliate membrane; 3–10 mm long. Leaf-blades flat, or involute; 10–30 cm long; 1–4 mm wide; stiff. Leaf-blade surface ribbed; scabrous; rough adaxially. Leaf-blade margins scabrous. Leaf-blade apex attenuate; pungent.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 15–20 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose; hairy below; with 1 mm long hairs. Floret callus pilose. Floret callus hairs 1.5–2.5 mm long.

GLUMES Glumes persistent; similar; exceeding apex of florets; similar to fertile lemma in texture; shiny; gaping. Lower glume lanceolate; 4–5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume elliptic; 4–5 mm long; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; 3–4 mm long; membranous; without keel; 5 -veined. Lemma surface asperulous. Lemma apex dentate; 4 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.25–0.5 way up back of lemma; straight; 2.5–5 mm long overall. Rhachilla extension 1.5–2 mm long; pubescent.

FLOWER Lodicules 2; membranous. Anthers 3; 1.4 mm long. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-tropical: Malesia and Papuasia. Pacific: south-central.

NOTES Aveneae. Hooker 1994.

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