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Ulva umbilicalis L. and Porphyra umbilicalis Kütz. ( Rhodophyta , Bangiaceae ): a molecular and morphological redescription of the species, with a typification update
Author(s) -
Brodie Juliet,
Irvine Linda,
Neefus Christopher D.,
Russell Stephen
Publication year - 2008
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.1002/tax.574022
Subject(s) - typification , botany , biology , porphyra , confusion , algae , correct name , taxonomy (biology) , ecology , nomenclature , psychology , psychoanalysis
Problems with the name and concept of the entity known as “ Porphyra umbilicalis ” that have led to confusion over its identity for more than 250 years are addressed. The name was first used by Kützing (1843), who provided a diagnosis based entirely on material collected from Scotland by Scheele, but he later subsumed it under another species. Jacob Agardh (1883) transferred Ulva umbilicalis L. (1753) to Porphyra . We show that this nomenclatural problem can be resolved by typifying the names Ulva umbilicalis L. and Porphyra umbilicalis Kütz. Although we have located a Scheele specimen of Porphyra , there is no evidence that Kützing based his description of P . umbilicalis on this material. We have therefore selected a specimen of P . umbilicalis from Scotland as neotype of P . umbilicalis Kütz. which fits both his diagnosis and the current concept of P . umbilicalis and for which we have molecular data. We also provide a revised diagnosis and designate the specimen chosen as the neotype of P . umbilicalis Kütz. as the epitype of Ulva umbilicalis L.