- Family: Poaceae Barnhart
- Genus: Avenella Bluff ex Drejer
Avenella flexuosa (L.) Drejer
- Genus: Avenella Bluff ex Drejer
This species is accepted, and its native range is Europe to Japan and Malesian Mountains, Macaronesia, NW. & Tropical Montane Africa, Greenland to Central & E. U.S.A., S. South America to Falkland Islands.
[GB]
- Habit
- Perennial; caespitose. Rhizomes absent, or elongated. Culms erect; 20-200 cm long; wiry; 1-3 -noded. Leaves mostly basal. Leaf-sheaths smooth, or scaberulous. Ligule an eciliate membrane; 0.5-3 mm long; obtuse. Leaf-blades filiform; involute; 5-20 cm long; 0.3-0.8 mm wide; stiff. Leaf-blade apex abruptly acute, or acute.
- Inflorescences
- Inflorescence a panicle. Panicle open; ovate; effuse; 4-15 cm long; 3-20 cm wide. Panicle branches capillary; scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 3-10 mm long; scabrous.
- Spikelets
- Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong, or cuneate; laterally compressed; 4-6 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; pilose. Floret callus pilose.
- Fertile
- Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong, or cuneate; laterally compressed; 4-6 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; pilose. Floret callus pilose.
- Glume
- Glumes persistent; similar; reaching apex of florets; similar to fertile lemma in texture; shiny. Lower glume ovate; 3-5 mm long; 0.8-0.9 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface smooth, or asperulous. Lower glume apex acute. Upper glume elliptic; 4-6 mm long; 1.1-1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1-3 -veined. Upper glume surface smooth, or asperulous. Upper glume apex acute.
- Florets
- Fertile lemma oblong; 3.5-5.5 mm long; membranous; shiny; without keel; 4 -veined. Lemma apex erose; truncate, or obtuse; awned; 1 -awned. Principal lemma awn dorsal; arising 0.2 way up back of lemma; geniculate; 4-7 mm long overall; with twisted column. Palea keels scaberulous. Rhachilla extension 0.3-0.4 length of fertile floret; pilose.
- Flowers
- Lodicules 2; membranous. Anthers 3; 2-3 mm long. Ovary glabrous.
- Fruits
- Caryopsis with adherent pericarp; 2-2.5 mm long. Hilum punctiform.
- Distribution
- Europe: northern, central, southwestern, southeastern, and eastern. Africa: north, west-central tropical, northeast tropical, east tropical, and south. Asia-temperate: Siberia, Soviet far east, Caucasus, western Asia, and eastern Asia. Asia-tropical: India. Australasia: New Zealand. North America: Subarctic, eastern Canada, north-central USA, northeast USA, southeast USA, and Mexico. South America: Mesoamericana and southern South America. Antarctic: Subantarctic islands.
- Reference
- Aveneae. CEH.
Native to:
Alabama, Albania, Algeria, Argentina Northeast, Argentina Northwest, Argentina South, Arkansas, Azores, Baltic States, Belarus, Belgium, Borneo, Bulgaria, Burundi, Central European Rus, Chile Central, Chile North, Chile South, Congo, Connecticut, Corse, Czechoslovakia, Delaware, Denmark, District of Columbia, East European Russia, Ethiopia, Falkland Is., Finland, Florida, France, Føroyar, Georgia, Great Britain, Greece, Greenland, Hungary, Iceland, Illinois, Indiana, Iran, Ireland, Italy, Japan, Kamchatka, Kentucky, Kenya, Khabarovsk, Krasnoyarsk, Kuril Is., Labrador, Louisiana, Madeira, Magadan, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Morocco, Nepal, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, North Carolina, North Caucasus, North Dakota, North European Russi, Northwest European R, Norway, Nova Scotia, Ohio, Oklahoma, Ontario, Pennsylvania, Philippines, Poland, Portugal, Prince Edward I., Québec, Romania, Rwanda, Sakhalin, Sardegna, Sicilia, South Carolina, South European Russi, Spain, Sweden, Switzerland, Taiwan, Tanzania, Tennessee, Texas, Transcaucasus, Turkey, Turkey-in-Europe, Uganda, Ukraine, Uruguay, Vermont, Virginia, West Himalaya, West Siberia, West Virginia, Wisconsin, Yugoslavia, Zaïre
Introduced into:
Alaska, Aleutian Is., Brazil South, Brazil West-Central, British Columbia, California, Cape Provinces, Colorado, Costa Rica, Ecuador, Hawaii, Idaho, Mexico Central, New Zealand North, New Zealand South, Oregon, Rhode I., South Georgia, Tristan da Cunha, Washington, Wyoming, Yukon
- Avenella flexuosa subsp. afromontana (C.E.Hubb.) Veldkamp
- Avenella flexuosa subsp. corsica (Tausch) Holub
- Avenella flexuosa subsp. flexuosa
- Avenella flexuosa subsp. foliosa (Hack.) Veldkamp
- Avenella flexuosa subsp. iberica (Rivas Mart.) Valdés & H.Scholz
- Avenella flexuosa subsp. ligulata (Stapf) Veldkamp
- Avenella flexuosa subsp. maderensis (Hack. & Bornm.) Veldkamp
- Avenella flexuosa subsp. mairei (Sennen) F.Albers ex Veldkamp
- Avenella flexuosa subsp. stricta (Willk. & Lange) Veldkamp
Avenella flexuosa (L.) Drejer appears in other Kew resources:
Date | Reference | Identified As | Barcode | Type Status |
---|---|---|---|---|
Bally, J. [3258], Kenya | Deschampsia flexuosa | K000333380 | ||
Bally, J. [3261], Kenya | Deschampsia flexuosa | K000333416 | ||
Bogdan, A. [3950], Kenya | Deschampsia flexuosa | K000333378 | ||
Verdcourt, B. [2043], Kenya | Deschampsia flexuosa | K000333381 | ||
Hedberg, O. [931], Kenya | Deschampsia flexuosa | K000333379 | ||
Hedberg, O. [1840], Kenya | Deschampsia flexuosa | K000333382 | ||
illegible [s.n.], Germany | Deschampsia flexuosa | K000808845 | ||
Reverchon, E. [47], Spain | Deschampsia flexuosa | K000808838 | ||
Mearns, E.A. [1664], Kenya | Deschampsia flexuosa | K000333383 | ||
Braun, A. [s.n.], Germany | Deschampsia flexuosa | K000808852 | ||
Fries [2919], Kenya | Deschampsia flexuosa | K000333377 | ||
Fries [3122], Kenya | Deschampsia flexuosa | K000333415 | ||
Lange, J. [53], Spain | Deschampsia flexuosa | K000808841 | ||
Boreau, A. [s.n.], France | Deschampsia flexuosa | K000808842 | ||
Boreau, A. [s.n.], France | Deschampsia flexuosa | K000808843 | ||
Ahlberg, F. [s.n.], Norway | Deschampsia flexuosa | K000808846 | epitype | |
Hedberg [1986], Kenya | Deschampsia flexuosa | K000333376 | ||
Cope, T.A. [RBG 403], United Kingdom | Deschampsia flexuosa | K000914527 | ||
Westberg, G. [94], Latvia | Deschampsia flexuosa | K000808848 | ||
Czetz, L. [s.n.] | Deschampsia flexuosa | K000808847 | ||
Lejeune, A.L.S. [s.n.] | Deschampsia flexuosa | K000808850 | ||
Serafino, E. [109], Corse | Deschampsia flexuosa | K000808840 | ||
Melvill, J.C. [s.n.], Great Britain | Deschampsia flexuosa | K000808859 | ||
s.coll. [s.n.], Great Britain | Deschampsia flexuosa | K000808851 | ||
Swartz, O.P. [s.n.] | Deschampsia flexuosa | K000808849 | ||
Durieu, M.M.C. [174], Spain | Deschampsia flexuosa | K000808839 | ||
Uechtritz, M.F.S. von. [s.n.], Czech Republic | Deschampsia flexuosa | K000808844 | ||
Melbill, J.C. [s.n.], Great Britain | Deschampsia flexuosa | K000808858 |
First published in Fl. Excurs. Hafn.: 32 (1838)
Accepted by
- Ackerfield, J. (2015). Flora of Colorado: 1-818. BRIT Press.
Not accepted by
- Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Deschampsia flexuosa.]
Literature
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Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0