Agrostis vinealis

HABIT Perennial; caespitose. Rhizomes elongated. Culms erect, or geniculately ascending; 10–60 cm long. Ligule an eciliate membrane; 1–5 mm long; obtuse, or acute. Leaf-blades flat, or convolute; 2–15 cm long; 1–3 mm wide. Leaf-blade surface scabrous; rough adaxially, or on both sides.

INFLORESCENCE Inflorescence a panicle.

Panicle open, or contracted; lanceolate, or oblong, or ovate; 2–20 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; terete.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2–3.3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2–3.3 mm long; 1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein smooth, or scaberulous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma oblong; 1.5–2.5 mm long; hyaline; without keel; 5 -veined. Lemma apex erose; truncate; muticous, or awned; 1 -awned. Principal lemma awn dorsal; arising 0.4 way up back of lemma; geniculate; 2–4.5 mm long overall; with twisted column. Palea 0.5 mm long; hyaline; 2 -veined.

FLOWER Lodicules 2; membranous. Anthers 3; 1–1.5 mm long. Stigmas 2; laterally exserted.

FRUIT Caryopsis with adherent pericarp. Hilum linear. Endosperm farinose.

DISTRIBUTION Europe: northern, central, southwestern, southeastern, and eastern. Asia-temperate: Siberia, Soviet far east, Soviet Middle Asia, Caucasus, western Asia, China, and Mongolia. Asia-tropical: India.

NOTES Aveneae. Fl Pak.

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