Difference between revisions of "Rhizoplaca shushanii"
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Ordo: Lecanorales
Familia: Lecanoraceae
Genus: Rhizoplaca
Name
Rhizoplaca shushanii S. Leavitt, F. Fernández-Mendoza, Lumbsch, Sohrabi & L. St. Clair sp. nov. – Wikispecies link – Pensoft Profile
Type
USA, Utah, Wayne County, Thousand Lakes Mountain, vicinity of ‘Flat Top’, near summit, 38.4366°N, 111.4677°W, on basalt, 3270 m alt., October 1997, Lyndon D. Porter BRY-C55061 (holotype BRY).
Description
Morphologically similar to Rhizoplaca melanophthalma sensu stricto, but consists of specimens recovered within ‘clade III’ in Leavitt et al. (2011a)[1], which is supported as a lineage distinct from all other populations according to coalescent-based genetic analysis of multiple genetic loci. The mean genetic distances among ITS haplotypes was estimated to be 0.001 ± 0.002.
Chemistry– Usnic (major), psoromic (major), subpsoromic (minor), and 2’-O-demethylsubpsoromic (minor or trace) acids; usually with constipatic (minor) and 2’-O-demethylpsoromic (minor) acids; and occasionally with dehydroconstipatic (minor) and dehydroprotocetraric (minor) acids.
Reference phylogeny
Leavitt et al. 2011a[1] (fig. 5, ‘clade III’).
Reference sequences
GenBank Nos. HM577282 (ITS), HM577058 (IGS), HM577187 (group I intron), HM577416 (MCM 7), and HM576927 (β-tubulin).
Phylogenetic notes: A monophyletic lineage in both concatenated multilocus gene tree with strong statistical support (ML bootstrap = 100%; posterior probability 1.0), and with strong statistical support in the ITS gene topology (ML bootstrap = 100%, this study); and high speciation probability inferred from multiple loci (BPP speciation probability = 1.0).
Ecology and distribution
Found growing only on sun-exposed basalt boulders in subalpine meadows in southwestern USA. Currently known only from subalpine habitats on the Aquarius Plateau in southern Utah, USA.
Etymology
The new taxon is named in honor ofthe late Dr. Sam Shushan, a pioneer in western North American lichenology.
Specimens examined
See supplementary file 1.
Original Description
- Leavitt, S; Fernández-Mendoza, F; Pérez-Ortega, S; Sohrabi, M; Divakar, P; Lumbsch, H; Clair, L; 2013: DNA barcode identification of lichen-forming fungal species in the Rhizoplaca melanophthalma species-complex (Lecanorales, Lecanoraceae), including five new species MycoKeys, 7: 1-22. doi
Other References
- ↑ 1.0 1.1 Leavitt S, Fankhauser J, Leavitt D, Porter L, Johnson L, St. C (2011a) Complex patterns of speciation in cosmopolitan ‘‘rock posy’’ lichens – Discovering and delimiting cryptic fungal species in the lichen-forming Rhizoplaca melanophthalma species-complex (Lecanoraceae, Ascomycota). Molecular Phylogenetics and Evolution 59: 587-602. doi: 10.1016/j.ympev.2011.03.020
