WHAT IS CLADOLEJEUNEA ZWICKEL?
NEW OR LITTLE KNOWN EPIPHYLLOUS LIVERWORTS, XV.
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Cladolejeunea, Ceratolejeunea, conservation, endemism, Lejeunea, Usambara, TanzaniaAbsztrakt
The liverwort genus Cladolejeunea, described for a species of Lejeuneaceae from Tanzania with horned perianth keels as Cladolejeunea aberrans (Steph.) Zwickel, and long considered closely related to the members of the “Lejeunea eckloniana complex”, is reduced to synonymy under Lejeunea. As the name Lejeunea aberrans (=Acanthocoleus aberrans) already exists, a new name is proposed, Lejeunea gradsteiniana. The latter species is a rare and endangered endemic of the Usambara Mountains and its habitat needs protection. With the transfer of Cladolejeunea to Lejeunea virtually none of liverwort genera considered endemic to the African continent remain.
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