Bogoriella triangularis is a species of corticolous (bark-dwelling) crustose lichen in the family Trypetheliaceae.[3] This Caribbean lichen forms whitish crusty patches marked by dark border lines on smooth tree bark and is distinguished by its uniquely shaped fruiting bodies that are oval to triangular rather than round like most related species. It is known only from Puerto Rico, where it was discovered in the Maricao State Forest, making it an endemic species of the island.
Bogoriella triangularis has a whitish thallus marked by dark prothallus lines. Its fruiting bodies (ascomata) are solitary and typically oval to triangular in shape, with a prominent fringe and an apical opening; they measure 0.4–0.5mm across and about 0.2mm tall, and often include a lateral ostiole. The asci are about 120 by 15micrometres (μm).[4]
The ascospores are brown, with rounded ends and a warty surface, sometimes with the warts arranged in lines. They are 25–37μm long and 7–10μm wide, and are divided into two compartments that are usually equal, though the upper cell may be slightly larger. Asexual reproductive structures (pycnidia) occur along the prothallus lines, about 0.1mm wide, but the conidia have not been observed. Both the thallus and ascomata test negative in standard chemical spot tests (UV and K), and thin-layer chromatography has not revealed any secondary metabolites.[4]
Distribution
Bogoriella triangularis occurs in Puerto Rico, where it grows on smooth bark.[2][4]
1 2 3 Sipman, Harrie J.M.; Aptroot, André (2005). "Notes on Mycomicrothelia (Arthopyreniaceae s. lat.), with two new species". The Lichenologist. 37 (4): 307–311. doi:10.1017/S0024282905014878.
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