Koeleria besseri Ujhelyi

This species is accepted, and its native range is E. Central & E. Europe.

[GB]
Morphology General Habit
Perennial; caespitose; clumped loosely. Rhizomes short. Butt sheaths hirsute; persistent and investing base of culm; with compacted dead sheaths. Basal innovations extravaginal. Culms erect; 35-74 cm long; 1-2 mm diam. Lateral branches lacking. Leaves mostly basal. Leaf-sheath auricles erect. Ligule an eciliate membrane; 0.8-1 mm long; erose. Leaf-blades 10-20 cm long; 2-3 mm wide. Leaf-blade surface pilose.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle pubescent above. Panicle contracted, or spiciform; linear; interrupted; 5-16 cm long; 1-1.8 cm wide. Panicle axis hirsute. Panicle branches hirsute. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture; shiny; gaping. Lower glume lanceolate; 4.5 mm long; membranous; much thinner on margins; 1-keeled. Lower glume primary vein scaberulous. Lower glume apex acute. Upper glume ovate; 6 mm long; 1.1 length of adjacent fertile lemma; membranous; with hyaline margins; 1-keeled. Upper glume primary vein scaberulous. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 5.5 mm long; membranous; much thinner on margins; shiny; keeled; 5 -veined. Lemma surface puberulous. Lemma apex acute. Palea gaping; 5.2 mm long; 1 length of lemma. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 2 mm long.
Distribution
Europe: central.
Reference
Aveneae. Ujhelyi 2003.

Native to:

Baltic States, Belarus, Central European Rus, Czechoslovakia, Hungary, Poland, Ukraine

Koeleria besseri Ujhelyi appears in other Kew resources:

First published in Ann. Hist.-Nat. Mus. Natl. Hung. 64: 120 (1972)

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.

  • GrassBase - The Online World Grass Flora

    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. 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