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Nomenclatural problems in Pleurozia ( Pleuroziaceae ): the lectotypification of Pleurozia Dumort., Jungermannia sphagnoides Schwägr., Pleurozia sphagnoides Dumort., P. purpurea Lindb., Mnium jungermannia L. and Jungermannia undulata L. ( Hepaticae )
Author(s) -
Grolle Riclef,
Long DavidG.,
McNeill John
Publication year - 2005
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.2307/25065383
Subject(s) - herbarium , typification , botany , genus , geography , biology , nomenclature , taxonomy (biology)
A review is presented of nomenclatural problems in the genus Pleurozia Dumort. including the typification of five binomials relevant to the study of the genus. It is shown that the first lectotypification of Pleurozia by P . sphagnoides Dumort. 1874 can be maintained and that this preserves traditional usage of Pleurozia . The earlier Jungermannia sphagnoides Schwägr. 1814 is shown to be nomenclaturally independent and is newly lectotypified confirming its application to a species of the unrelated genus Schistochila . A new lectotype for Pleurozia purpurea Lindb. 1877 was found necessary, and this is designated from the previously overlooked herbarium of John Lightfoot (K). Mnium jungermannia L. is a heterogeneous element, in the past considered by some to include Pleurozia purpurea ; it is lectotypified by a Dillenian illustration, supported by an epitype from Dillenius’s herbarium that belongs to Scapania undulata (L.) Dumort. Mnium jungermannia and all names based on it, none of which are in current use, therefore become synonyms of S . undulata . Jungermannia undulata L. [≡ Scapania undulata (L.) Dumort.], also typified by a Dillenian illustration, is further stabilised in its current application by designation of an epitype in Dillenius’s herbarium.