GrassBase - The Online World Grass Flora

Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Agrostis munroana

HABIT Annual; caespitose. Culms erect, or geniculately ascending; 10–45(–70) cm long. Ligule an eciliate membrane; 2.5–4 mm long; obtuse. Leaf-blades 3–15 cm long; 1.5–5 mm wide. Leaf-blade surface smooth, or scaberulous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; linear, or oblong; dense, or loose, or effuse; 3–15(–20) cm long. Primary panicle branches 2–3 -nate.

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

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 1.5–2.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.33 length of lemma.

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; 1.5–2.5 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma oblong; 1.2–2 mm long; hyaline; without keel; 5 -veined. Lemma surface pilose. Lemma apex erose; truncate; muticous, or awned; 1 -awned. Principal lemma awn dorsal; arising 0.4–0.5 way up back of lemma; straight; 1–3 mm long overall. Palea 1 length of lemma; hyaline; 2 -veined.

FLOWER Lodicules 2; membranous. Anthers 3; 0.4–0.8 mm long. Stigmas 2; laterally exserted.

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

DISTRIBUTION Asia-temperate: western Asia and China. Asia-tropical: India.

NOTES Aveneae. Fl Pak 1993.

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