Galbinothrix, a new monotypic genus of Chrysotrichaceae
(Arthoniomycetes) lacking pulvinic acid derivatives
| 1 | Department of Natural History, NTNU University Museum, Erling
Skakkes gate 47a, 7012 Trondheim, Norway |
| 2 | Department of Ecology, Swedish University of Agricultural Sciences,
P.O. Box 7044, SE-750 07 Uppsala, Sweden |
| 3 | National Institute of Biological Resources, Incheon 22689, South
Korea |
| 4 | Department of Botany, National Museum of Nature and Science, 4-1-1
Amakubo, Tsukuba, 305-0005, Japan |
Publication date: 2018-12-31
Plant and Fungal Systematics 2018; 63(2): 31–37
KEYWORDS
ABSTRACT
Galbinothrix caesiopruinosa is described from Japan and Korea. The new genus
and species is placed in Chrysotrichaceae by its ascoma morphology and by a phylogenetic
analysis of mtSSU and nLSU sequence data using Bayesian and maximum likelihood inference.
The monotypic genus Galbinothrix is superficially similar to Chrysothrix caesia in
having dark brown ascomata covered by a thin bluish grey pruina, reddish brown ascomatal
pigment in the epithecium and proper exciple, the greyish green to yellowish olive thallus,
and usnic acid as the main secondary thallus compound. It differs from this species and all
other Chrysotrichaceae by its large, oblong, thick-walled ascospores with a distinct epispore,
the narrowly clavate to almost tubular asci, and the never clearly granular to leprose thallus.
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