Ann. Bot. Fennici 44: 81–102 ISSN 0003-3847 Helsinki 26 April 2007 © Finnish Zoological and Botanical Publishing Board 2007 Taxonomy, distribution and ecology of Bolboschoenus in Europe Zdenka Hroudová1, Petr Zákravský1, Michal Ducháček2 & Karol Marhold3,4 1) Institute of Botany, Academy of Sciences of the Czech Republic, CZ-252 43 Průhonice, Czech Republic (e-mail:
[email protected],
[email protected]) 2) National Museum, Department of Botany, CZ-252 43 Průhonice, Czech Republic (e-mail:
[email protected]) 3) Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 14, SK-845 23 Bratislava, Slovak Republic (e-mail:
[email protected]) 4) Department of Botany, Charles University, Benátská 2, CZ-128 01 Praha, Czech Republic Received 15 July 2005, revised version received 24 May 2006, accepted 29 Aug. 2006 Hroudová, Z., Zákravský, P., Ducháček, M. & Marhold, K. 2007: Taxonomy, distribution and ecol- ogy of Bolboschoenus in Europe. — Ann. Bot. Fennici 44: 81–102. The five species of Bolboschoenus — B. glaucus, B. laticarpus, B. maritimus, B. planiculmis and B. yagara — occurring in Europe were studied. A detailed taxonomic and nomenclatural account is provided for these taxa, together with an identification key, distribution data and maps based on a revision of herbarium specimens from 36 herbaria and on field observations. Because ecological differentiation influences the distribution of the taxa concerned, detailed information on their ecology is also pro- vided. Key words: Bolboschoenus, Cyperaceae, distribution, Europe, nomenclature, tax- onomy Introduction ican (Browning et al. 1995) and Australasian (Browning et al. 1997) taxa. They reported B. The taxonomy of Bolboschoeneus (Cyperaceae; yagara to be a new taxon for Europe, as well as formerly included in Scirpus) has advanced con- its putative hybrid with B.