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Auteur Jan Kirschner |
Documents disponibles écrits par cet auteur (2)
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Affiner la rechercheDiploids of the Valeriana officinalis group (Valerianaceae) in Central Europe, and an attempt to unravel the nomenclatural chaos / Jan Kirschner in Willdenowia, vol. 47, n°3 (Année 2017)
Titre : Diploids of the Valeriana officinalis group (Valerianaceae) in Central Europe, and an attempt to unravel the nomenclatural chaos Type de document : texte imprimé Auteurs : Jan Kirschner, Auteur ; VojtÄ›ch Zeisek, Auteur Année de publication : 2017 Article en page(s) : pp. 189-201 Langues : Anglais (eng) Résumé : "Diploid populations of Valeriana officinalis L. (Valerianaceae) in Central Europe exhibit an extensive variation, with two conspicuous morphotypes. One, corresponding to the lectotype of V. officinalis, is larger, with broader, distinctly dentate leaflets, the other is in many respects similar to V. pratensis Dierb. and V. stolonifera Czern., but is glabrous, with narrow, usually entire leaflets. The two forms also differ in their ecological optimum and in geographical distribution, but are linked with numerous intermediates. Morphometric analysis (PCA) supports the picture outlined above. Nomenclatural analysis shows that the correct name for the taxon with narrow leaflets at the rank of variety is V. officinalis var. tenuifolia Vahl, with a very old synonym at the rank of subspecies, V. officinalis subsp. tenuifolia (Vahl) Schübler & Martens. A lectotype and epitype (from a plant with 2n = 14) are designated for this name. The epithet tenuifolia cannot be used for what has usually been called V. collina auct., or correctly, V. stolonifera subsp. angustifolia Soó. Further names were also studied in detail: V. officinalis var. angustifolia Wahlenb., V. officinalis var. angustifolia Hayne (for which a lectotype is designated), V. altissima Besser and V. officinalis var. altissima W. D. J. Koch." Type de publication : périodique Référence biblio : Kirschner J., Zeisek V., 2017 - Diploids of the Valeriana officinalis group (Valerianaceae) in Central Europe, and an attempt to unravel the nomenclatural chaos. Willdenowia, 47 (3) : 189-201. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66416
in Willdenowia > vol. 47, n°3 (Année 2017) . - pp. 189-201[article]Exemplaires(1)
Cote Localisation Disponibilité P0170 Brest Exclu du prêt
Titre : Taxonomie revision of selected species in Taraxacum sect. Erythrosperma (Asteraceae, Cichorieae) from the E Mediterranean region Type de document : texte imprimé Auteurs : Jan Å tepánek, Auteur ; Jan Kirschner, Auteur Année de publication : 2018 Article en page(s) : pp. 365-369 Langues : Anglais (eng) Résumé : "Selected species in Taraxacum F. H. Wigg., belonging to T. sect. Erythrosperma (H. Lindb.) Dahlst., described by C. E. Sonck, G. E. Haglund and A. J. Richards, were revised taxonomically. The types of their names were compared with plant material mainly from the Balkan Peninsula and Crimea. The main sources of material were ample collections of R. Willing and E. Willing from Greece (deposited at B), and plants collected and/or cultivated by us from the Balkan Peninsula and Crimea (deposited at PRA). Four names are relegated to synonymy. Taraxacumamborum G. E. Hagl. is newly interpreted and lectotypified, and T. viale Sonck is synonymized with it. Taraxacumedessicum Sonck and T. aestuans Sonck were found to be conspecific with T. salonikiense Sonck. Taraxacumgionense A. J. Richards belongs to T. botanicorum Sonck. Range extensions include T. salonikiense in Albania, T.amborum in Bulgaria, Montenegro and Romania, and T. egnatiae from Ukraine." Type de publication : périodique Référence biblio : Å tepánek J., Kirschner J., 2018 - Taxonomie revision of selected species in Taraxacum sect. Erythrosperma (Asteraceae, Cichorieae) from the E Mediterranean region. Willdenowia, 48 (3) : 365-369. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=68064
in Willdenowia > vol. 48, n°3 (Année 2018) . - pp. 365-369[article]Exemplaires(1)
Cote Localisation Disponibilité P0170 Brest Exclu du prêt
