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 Add this item to the list   Phlyctis subhimalayensis

General information

 Summary:Phlyctis subhimalayensis S. Joshi & Upreti, The Lichenologist 44: 365 (2012) [MB#563688] 
 MycoBank #:563688 
 Authors:S. Joshi & Upreti
 Authors (abbreviated):S. Joshi & Upreti
 Page #:365
 Year of effective publication:2012
 Date public:2016-11-15 08:01:19 
 Remarks:Phlyctis subhimalayensis is characterized by the thallus lacking lichen substances, the chroodiscoid apothecia with pruinose black apothecial discs and white exfoliating margins and transversely 5–7-septate ascospores. It shows a close resemblance to Phlyctis himalayensis (Nyl.) D.D. Awasthi and P. karnatakana S. Joshi & Upreti, in having transversely 7-septate ascospores but differs in thallus chemistry and ascospore size. Both P. himalayensis and P. karnatakana have a K+ red thallus with unidentified lichen compounds in the former and norstictic acid in the latter. P. himalayensis has a subleprose thallus with comparatively larger ascospores of 60–75 × 6–8 µm, compared to 20-35(-40) x 2-4 µm in P. subhimalayensis.
Phlyctis subhimalayensis somewhat resembles the New Zealand taxa P. longifera (Nyl.) D. Galloway & G. Guzmán and P. megalospora (P. James) D. Galloway & G. Guzmán , both of which have transverse spore septation. However, the latter two species have larger ascospores (55–86 × 5–7 µm and 285–390 × 79–95 µm in size) and both contain depsidones, viz: stictic acid and psoromic acid, respectively.
In its morphology and chroodiscoid apothecia Phlyctis subhimalayensis can be confused with the members of thelotremoid Graphidaceae (e.g. Chapsa) and also the non-lichenized genus Stictis. However, the absence of periphysoids, the presence of chlorococcoid algae and a poorly developed proper exciple clearly separate the new species from them. Further, the amyloid asci of P. subhimalayensis are unusual in the thelotremoid Graphidaceae. The genus Stictis is characterized by a well-developed crystalline layer between proper exciple and hymenium, which, however, is lacking in the new taxon.
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