New! - Search other data sources for Calamagrostis pseudophragmites

Help - Wrong Description?

Kew Data Sources

Kew's Herbarium Catalogue
ePIC - Electronic Plant Information Centre

External Data Sources

Note - this takes you off of our website
Use your browser's back button to return to this page

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.

Calamagrostis pseudophragmites

HABIT Perennial. Rhizomes elongated. Culms erect; 20–150 cm long. Ligule an eciliate membrane; 4–10 mm long; acute. Leaf-blades flat, or conduplicate; 15–35 cm long; 2–10 mm wide. Leaf-blade surface smooth, or scabrous; glabrous. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence a panicle; without bracts, or bracteate at branch bases. Peduncle antrorsely scabrous above.

Panicle open, or contracted; lanceolate, or oblong; 4–40 cm long. Primary panicle branches ascending, or spreading; 3–7 -nate; 4–8 cm long.

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

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 5–9 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 2–3 length of lemma.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 5–9 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein smooth, or scaberulous. Lower glume lateral veins absent. Lower glume apex acute, or acuminate. Upper glume lanceolate; 5–9 mm long; 2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein smooth, or scaberulous. Upper glume apex acute, or acuminate.

FLORETS Fertile lemma elliptic, or oblong; 2.5–4.5 mm long; hyaline; without keel; 5 -veined. Lemma apex erose; truncate; awned; 1 -awned. Principal lemma awn subapical; straight; 1–3 mm long overall; not or scarcely exserted from spikelet.

FLOWER Lodicules 2; membranous. Anthers 3; 2 mm long; purple. Stigmas 2.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

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

NOTES Aveneae. Fl Pak 1993.

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