Showing papers on "Parmelia published in 2012"
TL;DR: The Parmelia crozalsiana group is recognized as the genus Crespoa, a morphologically and phylogenetically discrete group of foliose macrolichens that has always been recognized as distinct from Parmotrema s str.
Abstract: Recent molecular phylogenetic analyses of the lichen family Parmeliaceae have revealed that the members of the Parmelia crozalsiana group form a sister clade to one containing members of the genus Parmotrema . The four species in this group were classified first in Parmelia , then Pseudoparmelia , and later Canoparmelia . Recently, the classification of this group was resolved by placing the species in the newly-described Parmotrema subg. Crespoa . This placement was justified by an absence of characters from the fungal reproductive structures distinguishing members of the group from those classified in Parmotrema subg. Parmotrema . As this classification obfuscates a morphologically and phylogenetically discrete group of foliose macrolichens that has always been recognized as distinct from Parmotrema s. str. , we here recognize the group as the genus Crespoa . A discussion of taxonomic rank assignment based on character-types that are preconceived as diagnostic is also provided.
18 citations
Journal Article•
TL;DR: Phytochemical examination on the petroleum ether extract of lichen Parmelia perlata led to the isolation of tridecyl myristate (I), 3-ketooleanane (II), icosan-1-ol (III) and (+) usnic acid (IV).
Abstract: Phytochemical examination on the petroleum ether extract of lichen Parmelia perlata led to the isolation of tridecyl myristate (I), 3-ketooleanane (II), icosan-1-ol (III) and (+) usnic acid (IV). Compounds I-III are isolated first time from this lichen. The structure of these compounds was elucidated on the basis of different spectroscopic techniques.
10 citations
TL;DR: With 30 species, Tasmania is a major area of species diversity in the genus Menegazzia, and seven of these are new to science: M. abscondita Kantvilas, known from Tasmania and New Zealand, and M. tarkinea Kantvils, all endemic to Tasmania, which suggests they are products of long-distance dispersal.
Abstract: With 30 species, Tasmania is a major area of species diversity in the genus Menegazzia. Seven of these are new to science: M. abscondita Kantvilas, known from Tasmania and New Zealand, and M. athrotaxidis Kantvilas, M. hypogymnioides Kantvilas, M. petraea Kantvilas, M. ramulicola Kantvilas, M. subtestacea Kantvilas and M. tarkinea Kantvilas, all endemic to Tasmania. An identification key, descriptions based exclusively on Tasmanian collections, and detailed discussion of distribution, ecology, chemical composition and inter-species relationships are provided. All literature records of Menegazzia species pertaining to Tasmania are accounted for. New synonyms include: Menegazzia prototypica P. James and Parmelia pertusa var. coskinodes F. Wilson [synonyms of M. myriotrema (Mull. Arg.) R. Sant.], M. fertilis P. James [a synonym of M. platytrema (Mull. Arg.) R. Sant.] and Parmelia pertusa var. montana F. Wilson (a synonym of M. subtestacea). Incorrectly recorded species that should be deleted from the Tasmanian census include M. castanea P. James & D. J. Galloway (present on Macquarie Island) and M. testacea P. James & D. J. Galloway (endemic to New Zealand). The South American species, M. sanguinascens (Ras.) R. Sant., is recorded in Australasia (Tasmania) for the first time, whereas the widespread south-eastern Australian M. norstictica P. James is recorded for Western Australia. Salient features of the genus are discussed, including morphology, anatomy and chemistry. The biogeography of the genus is explored briefly. Twelve species (40%) are endemic to Tasmania, a level of endemism unmatched by any other species-rich genus on the island. Twelve species are shared with mainland Australia, eleven are shared with New Zealand, and only four species are shared with southern South America, all of which are sorediate, suggesting they are products of long-distance dispersal.
8 citations