Review of the type specimens for Hedwig's species of Dicranella (Dicranaceae)

The typification of the 10 Hedwig moss names that were described under Dicranum Hedw., but later associated with Dicranella Schimp. is considered herein. Dicranum orthocarpum Hedw. [Dicranella heteromalla (Hedw.) Schimp.] is found to have a satisfactory holotype. Lectotypes are designated for Dicranum cerviculatum Hedw. [Dicranella cerviculata (Hedw.) Schimp.], Dicranum crispum Hedw. [Dicranella crispa (Hedw.) Schimp.], Dicranum curvatum Hedw. [=Dicranella subulata (Hedw.) Schimp.], Dicranum interruptum Hedw. [=Dicranella heteromalla], Dicranum pusillum Hedw. [=Dicranella cerviculata], Dicranum schreberianum Hedw. [Dicranella schreberiana (Hedw.) Hilf. ex H.A.Crum & L.E.Anderson], and Dicranum subulatum Hedw. [Dicranella subulata], and the two names that were previously lectotypified are reviewed, Dicranum heteromallum Hedw. [Dicranella heteromalla] and Dicranum varium Hedw. [Dicranella varia (Hedw.) Schimp.]