Bogoriella obovata is a species of corticolous (bark-dwelling) crustose lichen in the family Trypetheliaceae.[2] This tropical lichen forms pinkish-white crusty patches marked by distinct dark border lines on various surfaces and produces solitary, small dark fruiting bodies. It has a broad distribution across the eastern tropical regions, being found from Australia and New Guinea through Southeast Asia to Borneo and the Philippines.
Several other names are now considered synonyms of this species. Microthelia alba and Microthelia brisbanensis, both described by Müller Argoviensis in 1895 from Brisbane, are based on material housed in Geneva (G). Two additional names, Didymosphaeria tetraspora (described by George Massee in 1907 from Sarawak, Malaysia, with the holotype at Kew) and Didymosphaeria thelenoides (described by Edvard Vainio in 1915 from Dominica, with a lectotype designated by Aptroot in 1995 and preserved in TUR-Vain), are likewise treated as synonyms of Bogoriella obovata.[6]
Description
Bogoriella obovata has a pinkish-white thallus that is marked by distinct prothallus border lines. Its fruiting bodies (ascomata) are solitary, 0.5–0.6mm in diameter and 0.2–0.3mm tall, with walls 45–60micrometres (μm) thick. The asci are 75–90 by 20–30μm (occasionally as small as 65μm long). The spores are brown, warty in texture, and usually divided into two compartments, with the upper cell slightly larger. They measure 22–28μm long (sometimes ranging from 21 to 30μm) and 9–11μm wide (occasionally 8.5–12μm). Although primarily 1-septate, the spores often develop two additional pseudosepta , making them appear 3-septate. No pycnidia have been observed. Standard chemical spot tests (UV and K) are negative, and thin-layer chromatography has not revealed any detectable secondary metabolites.[6]
Distribution
Bogoriella obovata occurs in the eastern Palaeotropics, with records from Borneo, the Philippines, Papua New Guinea, and Australia.[6]
↑ Stirton, J. (1881). "Additions to the lichen flora of Queensland". Transactions and Proceedings of the Royal Society of Victoria. 17: 66–79 [74].
↑ Müller, J. (1895). "Pyrenocarpeae Queenslandiae". Report of the Australasian Association for the Advancement of Science (in Latin). 6: 449–466 [454].
↑ Hawksworth, D.L. (1985). "A redisposition of the species referred to the ascomycete genus Microthelia". Bulletin of the British Museum for Natural History. 14 (2): 43–181 [106].
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