Coscinodon humilis, an overlooked species
- Coscinodon humilis was described by Milde from mica schist in the Passeiertal NE Merano (formerly southern Tyrolia in Austria, hence cited as Austria by Greven 1995. now Alto Adige in Italy). Limpricht (1890) regarded it as “verkümmerte Form von C. cribrosus”, and although Mönkemeyer (1927) still cited it, the species got forgotten by the time. Thus the species was no more mentioned by Corley et al (1981) in the European checklist and therefore no more included by Frey et al. (1995) in the German edition of the “Moos- und Farnpflanzen Europas”. Greven (1995) re-established the species in his treatment of Grimmia (and related genera) in Europe. Therefore Frey et al. (2006) included the species, which was, however, not keyed out. Finally Hill et al. (2006) listed it again in the new European checklist as a good species.
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