1,721,008 research outputs found
Phaeorrhiza H. Mayrhofer & Poelt 1979
No full textKey to Phaeorrhiza 1. Apothecia cryptolecanorine, disc concave to plane........................................................................................................... P. nimbosa - Apothecia lecideine, disc strongly convex......................................................................................... P. sareptana var. sphaerocarpaPublished as part of Zhong, Qiuyi, Zhang, Yanyun, Wang, Xinyu, Timdal, Einar, Gong, Hede, Wang, Zizhi & Wang, Lisong, 2021, Phaeorrhiza (Physciaceae), a new lichen genus record to China, pp. 228-238 in Phytotaxa 510 (3) on page 231, DOI: 10.11646/phytotaxa.510.3.3, http://zenodo.org/record/542641
FIGURE 1 in Phaeorrhiza (Physciaceae), a new lichen genus record to China
No full textFIGURE 1. Morphology and anatomy of Phaeorrhiza nimbosa. a–c Thallus and apothecia. a Thallus and apothecia growing in the open. b Thallus surface covered with pruina. c Thallus and apothecia surface covered with pruina. d The lower surface of thallus and rhizoyphae. e Section of apothecia. f Beltraminia-type ascospores. Scale bars: 3 mm (a–c); 0.2 mm (d); 50 μm (e); 10 μm (f).Published as part of Zhong, Qiuyi, Zhang, Yanyun, Wang, Xinyu, Timdal, Einar, Gong, Hede, Wang, Zizhi & Wang, Lisong, 2021, Phaeorrhiza (Physciaceae), a new lichen genus record to China, pp. 228-238 in Phytotaxa 510 (3) on page 232, DOI: 10.11646/phytotaxa.510.3.3, http://zenodo.org/record/542641
First insights into genetic diversity and relationships of European taxa ofSolenopsora(Catillariaceae, Ascomycota) with implications for their delimitation
No full textThe lichen genus Solenopsora occurs predominantly in temperate and subtropical regions of the world, and the centre of diversity and distribution is in the Mediterranean, Macaronesian, and Madrean floristic regions. Taxonomic treatment of several taxa has varied over time and the concepts lack clarity. Focusing on multilocus sequence data, morphology, anatomy, chemistry, and ecological preferences, the present study investigates European Solenopsora taxa to obtain the first insights into their genetic variation and relationships. Our results show discrepancy between the number of currently recognized taxa in Europe and the number of genetic entities identified. We recognize eight species in the genus in Europe: Solenopsora candicans, Solenopsora cesatii (including Solenopsora carpatica), Solenopsora grisea, Solenopsora holophaea, Solenopsora liparina, Solenopsora marina, Solenopsora olivacea, and Solenopsora vulturiensis. We gathered evidence to recognize S.liparina, an edaphic vicariant of S.candicans confined to ultramafic rocks, as a separate species. We disclosed a previously unknown sister relationship between S.grisea and S.vulturiensis. Taxonomic synopses, geographical distribution, and an identification key for the treated taxa are provided. Phylogenetic analyses revealed two major lineages among the European Solenopsora spp., differentiated by thallus organization, the presence/absence of rhizines on lower side of the thallus, secondary chemistry, and anatomy of upper cortex. The generic circumscription and phylogenetic position, however, appear problematic and additional studies with increased sampling including related genera are needed
Towards taxonomy, phylogeography and ecology of Solenopsora species (Leprocaulaceae) – elements with a strong link to Mediterranean-type ecosystems
Get PDFMediterranean ecosystems are well-known for high species richness, which has been triggered by the interplay among various environmental and bioclimatic factors. Despite a lot of data on evolution and ecology of Mediterranean biota, little is known about symbiotic systems like lichens. We analysed material from all the Mediterranean area, together with specimens from North America and Australia, aiming at investigating: 1) phylogenetic position of the genus Solenopsora within Leprocaulales, proper delimitation of which is needed (nrITS, Mcm7, PKS sequence data); 2) phylogeography of S. candicans (nrITS and β-tubuline sequences), and 3) species ecology (by mean of ecological niche modelling). Preliminary analyses of phylogeographic dataset suggest several centres of genetic diversity, mostly in the Mediterranean area. Two larger groups of ubiquitous, and more ancestral ribotypes occur across Europe. Certain accessions of S. candicans from Turkey and Morocco are more closely related,
forming a well delimited lineage, which is clearly distinct from the rest of the material. Unexpectedly,
samples from Pannonia are heterogeneous. This might indicate that Pannonia has represented an important
connection between centres of species distribution in the Mediterranean, and in the Western
Carpathians, representing northern periphery of distribution range, where few rare ribotypes were also
revealed
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Note on the occurrence of Nephroma occultum Wetm. in Alaska
No full textVolume: 21Start Page: 101End Page: 10
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
The morphologically cryptic lichen species Parmelia ernstiae and P. serrana new to Norway
No full textThe two species Parmelia ernstiae and P. serrana are reported as new to Norway from two collections each, identified by the DNA barcode marker (nrITS). A chemical analysis of selected specimens of P. saxatilis s. lat. revealed an additional 29 collections of the two species due to the presence of fatty acids. An analysis of seven morphological and chemical characters currently used for distinguishing the two species failed, however, and the two species are hence regarded as morphologically cryptic
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