''Obryzum'' is a fungal
genus in the
monotypic family Obryzaceae, in the class
Sordariomycetes
Sordariomycetes is a class of fungi in the subdivision Pezizomycotina (Ascomycota), consisting of 28 orders, 90 families, 1344 genera. Sordariomycetes is from the Latin sordes (filth) because some species grow in animal feces, though growth habit ...
. The relationship of this
taxon to other taxa within the class is unknown (''
incertae sedis'').
The genus name of ''Obryzum'' is derived from the
Ancient Greek word ὄβρυζον meaning pure gold.
Reported as a
parasitic on
cyanobacterial
Cyanobacteria (), also known as Cyanophyta, are a phylum of gram-negative bacteria that obtain energy via photosynthesis. The name ''cyanobacteria'' refers to their color (), which similarly forms the basis of cyanobacteria's common name, blu ...
lichens from the genus ''
Leptogium
''Leptogium'' is a genus of lichen-forming fungi in the family Collemataceae. It has about 110 species.
Species
*'' Leptogium acadiense''
*'' Leptogium adnatum'' – South America
*''Leptogium andegavense''
*'' Leptogium antarcticum''
*''L ...
''.
[
]
Description
The genus is mainly lichenicolous but with green algae
Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...
on rocks or tree bark and seldom on mosses
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) ''sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and horn ...
.
Sexual morph: Ascomata perithecial, pyriform (pear-like), astromatic, immersed. Ostiole periphysate. Peridium hyaline with ostiolar region appearing light brown at times. Asci 4-8-spored, unitunicate, clavate, closely ellipsoid to ovoid, short-pedicellate, with barely visible apical ring, deliquescent at the base. Ascospores overlapping 1–2-seriate, hyaline, aseptate, smooth-walled, fusiform to limoniform or ellipsoid, lacking any mucilaginous sheath or appendage. Asexual morph is undetermined (adapted from Cannon & Kirk 2007, Maharachchikumbura et al. 2016).
Distribution
It is mostly found in the north temperate zones,[P. F. Cannon and P. M. Kirk (Editors) ] and scattered worldwide. With most sightings in North America and Europe, with a few in Australia. Such as ''Obryzum corniculatum'' is found in several places in Great Britain.
Species
As accepted by Species Fungorum;Xanthopyreniaceae
Xanthopyreniaceae is a family of lichen-forming fungi in the order Collemopsidiales.
The family was circumscribed by lichenologist Alexander Zahlbruckner
Alexander Zahlbruckner (31 May 1860, Svätý Jur – 1938, Vienna) was an Austrian- H ...
family
References
{{Taxonbar, from=Q15642789, from2=Q10605914
Sordariomycetes enigmatic taxa
Ascomycota families