Anthoceros tristanianus J.C.Villarreal, J.J.Engel & Váňa in Váňa & Engel (Anthocerotaceae, Anthocerotophyta) a new record for South America from the Colombian bryophyte flora

Anthoceros tristanianus J.C.Villarreal, J.J.Engel & Váňa is reported here for the first time in South America from the Colombian flora, increasing the number of Anthoceros Linnaeus species recognized in that country to five. We present a taxonomic description, diagnostic characters, information concerning the ecology and geographic distribution of the species, as well as brief comparisons with morphologically similar taxa.