Cephaloziella uncinata (Cephaloziellaceae, Marchantiophyta) in Haute-Normandie, an Arctic liverwort new to France

摘要

Cephaloziella uncinata R.M. Schust. (Cephaloziellaceae, Marchantiophyta) has been observed in a peaty forest of a former loop of the Seine River (Seine-Maritime, Haute-Normandie). The criteria for a correct identification of this leafy liverwort, which is new to France, are discussed and compared synthetically to those of some close taxa. The ecology of its habitat and its worldwide distribution are given. The conservation issues of the species are discussedC1 [Prey, Timothee] Conservatoire Bot Bailleul Hameau Haendries, F-59270 Bailleul, France. Museum Chartres, F-28000 Bailleul, France.RP Prey, T (reprint author), Conservatoire Bot Bailleul Hameau Haendries, F-59270 Bailleul, France.EM t.prey@cbnbl.orgNR 13