Sagediopsis bayozturkii sp. nov. on the lichen Acarospora macrocyclos from Antarctica with a key to the known species of the genus (Ascomycota, Adelococcaceae)

ABSTRACT Sagediopsis bayozturkii , a lichenicolous fungus growing on Antarctic endemic species Acarospora macrocyclos , is described as new to science from three collections made at 65° south in the Argentine Islands (Graham Land, maritime Antarctica). The fungus has a distinct internal apical beak...

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Bibliographic Details
Published in:Polar Record
Main Authors: Halıcı, Mehmet Gökhan, Güllü, Mithat, Parnikoza, Ivan
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2017
Subjects:
Online Access:http://dx.doi.org/10.1017/s0032247417000043
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247417000043
Description
Summary:ABSTRACT Sagediopsis bayozturkii , a lichenicolous fungus growing on Antarctic endemic species Acarospora macrocyclos , is described as new to science from three collections made at 65° south in the Argentine Islands (Graham Land, maritime Antarctica). The fungus has a distinct internal apical beak in the ascus and ellipsoid three-septate ascospores; therefore, it is the member of Sagediopsis subgenus Hawksworthiella . Morphologically and anatomically S. bayozturkii is most similar to S. campsteriana and S. pertusariicola , which are confined to the lichen hosts Ochrolechia spp. and Pertusaria spp., respectively. In addition to having different hosts, S. bayozturkii differs from these two species by having smaller ascomata and shorter ascospores. Its similarities to other species of the genus are discussed, and an artificial key based on the published descriptions of the ten species now known in the genus Sagediopsis is presented.