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 Add this item to the list   Endococcus peltigericola

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 Summary:Endococcus peltigericola Zhurb. & Stepanchikova, The Bryologist 115 (2): 298 (2012) [MB#564568] 
 MycoBank #:564568 
 Authors:Zhurbenko & Stepanchikova
 Authors (abbreviated):Zhurb. & Stepanchikova
 Page #:298
 Year of effective publication:2012
 Date public:2017-02-26 21:43:15 
 Remarks:The presumable conidia are not typical for Endococcus Nyl., where they have been reported as being hyaline and bacilliform (Kainz & Triebel 2004).
Most Endococcus species are supposed to be highly host specific (26 of 34 being reported from a single host genus) and none have been reported to parasitize members of Peltigeraceae. However, five Endococcus species grow on other genera of Peltigerales, viz. E. caudisporus J.C. David & Etayo (on Collema), E. pallidosporus Etayo (on Pseudocyphellaria), E. parentus Etayo (on Pseudocyphellaria), E. pseudocarpus Nyl. (on Collema, Leptogium and Placynthium) and E. pseudocyphellariae Etayo (on Pseudocyphellaria) (David & Etayo 1995; Etayo & Sancho 2008; Halici et al. 2007).
Endococcus caudisporus can readily be distinguished from the new species by its immersed ascomata and much longer, caudate ascospores. Endococcus pallidosporus differs by its larger ascomata that are 100-150 µm in diameter, have a I+ red hymenium and grey brown, narrowly elliptic, slightly smaller ascospores, measuring (8-)9-11(-12.5) × 3-3.5(-4) µm. Endococcus parentus differs by the immersed ascomata, hemiamyloid hymenial gel and narrowly elliptic to almost fusiform ascospores. Endococcus pseudocarpus has larger, immersed ascomata of ca. 150 µm diam., I+ red hymenial gel and larger ascospores (13–15 × 5.5–6 µm). Endococcus pseudocyphellariae differs in its often conical and larger ascomata of 120-220 µm in diameter with subhyaline base and mostly narrowly ellipsoid, slightly larger ascospores, measuring (11.5-)13-15(-16) × 4-5 µm. Amongst the other species of the genus, E. peltigericola seems to be most similar, based on the dimensions of its ascomata and ascospores, to E. alectoriae (D. Hawksw.) D. Hawksw. (on Alectoria), E. nanellus Ohlert (on Stereocaulon), E. oropogonicola Etayo (on Oropogon), E. ramalinarius (Linds.) D. Hawksw. (on Ramalina), E. thamnoliae Etayo & R. Sant. (on Thamnolia) and E. tricolorans Alstrup (on Platismatia) (Alstrup 1993; Etayo 2002, 2010; Hawksworth 1971, 1976; Zhurbenko 2010). Beside the different host selection, these species have a number of additional distinguishing characters: E. alectoriae has at least partly immersed and somewhat larger ascomata, E. nanellus has I+ red hymenial gel and pale coloured ascospores, E. oropogonicola has ornamented ascospores, E. thamnoliae has at least partly immersed ascomata and E. tricolorans has semi-immersed, aggregated ascomata and is clearly pathogenic.
Endococcus peltigericola should also be compared with species of Polycoccum growing on Peltigerales, viz. P. crassum Vezda (on Peltigera), P. hymeniicola (Berk. & Broome) Zhurb. (on Lobaria), P. longisporum Etayo (on Nephroma and Pseudocyphellaria), P. peltigerae (Fuckel) Vezda (on Peltigera) and P. superficiale D. Hawksw. & Miadl. (on Peltigera) (Etayo & Sancho 2008; Hawksworth 1980; Hawksworth & Miadlikowska 1997; Zhurbenko & Dillman 2010). Aside from the persistent interascal filaments, all these species differ from Endococcus peltigericola by larger ascomata (equal or wider than 100 µm in diameter) and larger ascospores (the smallest ones of P. peltigerae measuring (12-)13.5-16(-18) × 4-6(-7) µm).
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