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 Add this item to the list   Stigmidium buelliae
    

General information

 Summary:Stigmidium buelliae Zhurb. & Himelbrant, The Bryologist 115 (2): 307 (2012) [MB#564571] 
 MycoBank #:564571 
 Epithet:buelliae
 Rank:
 
 Authors:Zhurbenko & Himelbrant
 Authors (abbreviated):Zhurb. & Himelbrant
 Literature:
 
 Page #:307
 Year of effective publication:2012
 Name type:Basionym 
 Gender:Neuter
 Date public:2017-02-26 22:00:09 
 Name status:Legitimate
 Remarks:Stigmidium buelliae closely resembles some other hymenium-inhabiting species of the genus, viz. S. cerinae Cl. Roux & Triebel (on Caloplaca, Teloschistales), S. collematis Cl. Roux & Triebel (on Collema, Peltigerales), S. congestum (Körb.) Triebel (on Lecanora, Lecanorales) and S. lecidellae Triebel, Cl. Roux & Le Coeur (on Lecidella; Lecanorales) (Roux & Triebel 1994; Roux et al. 1995). However, all these species grow on different host taxa (most Stigmidium Trevis. species are supposed to be confined to a particular host genus) and have significantly shorter asci and ascospores (mainly up to 15 µm, maximum up to 16 µm long). Furthermore, Stigmidium cerinae differs from the new species in having hyaline vegetative hyphae and occasionally pale brown ascospores. Stigmidium collematis may be distinguished by its poorly developed and shorter pendent suprahymenial filaments and non–pseudotetrablastic ascospores. Stigmidium congestum occasionally has 3-septate ascospores. Stigmidium lecidellae differs in its mostly hyaline vegetative hyphae, occasionally 3-septate or finely granulose ascospores and mild pathogenicity. Due to the pigmented vegetative hyphae, short pendent interascal filaments, resembling those of type “a” sensu Roux & Triebel (1994), absence of long interascal filaments, the metachromatic reactions and the pseudotetrablastic elongated ascospores the new species belongs to Stigmidium s. str. sensu Roux & Triebel (1994) and Calatayud & Triebel (2003). No Stigmidium species has previously been reported on Buellia, but one species of the similar genus Sphaerellothecium Zopf, namely S. buelliae (C.W. Dodge) D. Hawksw. & Iturr., has been described from that host genus (Hawksworth & Iturriaga 2006). However, this rather obscure species (no asci or ascospores were not found in the type material), can readily be distinguished by the association of its ascomata with dark, ramifying, superficial hyphae. 
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