[article] | Titre : | Revision of the Genus Ceratodon (Bryophyta) | | Type de document : | Livre | | Auteurs : | John Burley, Auteur ; Noel Pritchard, Auteur | | Année de publication : | 1990 | | Article en page(s) : | pp. 17-76 | | Langues : | Anglais | | Catégories : | [Thèmes] Taxonomie
| | Mots-clés : | holotype spécimen aire de répartition morphologie | | Résumé : | "The nomenclature and classification of the genus Ceratodon has been dominated, historically, by the notoriously polymorphic and cosmopolitan species C. purpureus, under which some 39 infraspecific taxa currently exist. An account is given of a quantitative analysis of morphological and geographical patterns of variation within the genus, leading to a reduction in the number of currently recognised species from 24-25 to form. Included in this is a proposal to raise to specific rank C. purpureus ssp. conicus and C. purpureus f. heterophyllus. No morphological distinction was apparent between the fourth species, C. antarcticus and specimens from the Arctic presently referred to C purpureus ssp. arcticus. Under C. purpureus, three subspecies are newly defined: ssp. purpureus, ssp. stenocarpus and ssp. convolutus (comb. nov.). Lectotypes are chosen for C. purpureus, C. purpureus var. rotundifolius, C. purpureus ssp. stenocarpus, C. purpureus ssp. convolutus and C. conicus." (source : auteurs) | | Type de publication : | périodique | | Référence biblio : | Burley J., Pritchard N., 1990 - Revision of the Genus Ceratodon (Bryophyta). Harvard Papers in Botany, 1 (2) : 17-76. | | ID PMB : | 66203 | | Permalink : | http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66203 |
in Harvard Papers in Botany > n°2 (Année 1990) . - pp. 17-76
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Affiner la rechercheGentianella in Britain : I. G. amarella, G. anglica anf G. uliginosa in Watsonia, vol. 4, n°4 (Année 1959)
