Bogoriella collospora

The species was originally described in 1918 by Edvard Vainio as Pyrenula collospora, based on material collected in Honshu, Japan, by Atsushi Yasuda. It was later transferred to Mycomicrothelia in 2009 by André Aptroot. In 2016, Aptroot and Robert Lücking placed it in the genus Bogoriella, giving the species its present name, Bogoriella collospora. The holotype specimen is housed in the Vainio collection at TUR (no. 31241), with an isotype (a duplicate) preserved at TNS. ==Description==

Bogoriella collospora has a thallus that is dark olive-brown but often reduced to the point of being nearly invisible. Its reproductive bodies (ascomata) are black, typically grouped in clusters of 2–10, and feature side openings (lateral ostioles) that are often fused together. Each ascus contains eight ascospores that are brown, ellipsoid to club-shaped with rounded tips, and covered in a fine ornamentation. The spores are divided into three internal cross-walls (3-septate), measure 34–38 by 11–13 μm, and are enclosed in a clear gelatinous sheath, although their walls are not thickened. No asexual reproductive structures (pycnidia) have been observed. Standard chemical spot tests (UV, K) are negative, and thin-layer chromatography has not detected any secondary metabolites. ==Distribution==

Bogoriella collospora is only known to occur in Honshu, Japan. ==References==