Polymeridium submuriforme
| Polymeridium submuriforme | |
|---|---|
Scientific classification 
| |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Dothideomycetes |
| Order: | Trypetheliales |
| Family: | Trypetheliaceae |
| Genus: | Polymeridium |
| Species: | P. submuriforme
|
| Binomial name | |
| Polymeridium submuriforme Aptroot (2013)
| |
Polymeridium submuriforme is a species of corticolous (bark-dwelling) lichen in the family Trypetheliaceae.[1] It occurs in the Philippines. This ecorticate lichen is characterized by its pinkish-grey thallus, which does not fluoresce under ultraviolet light. P. submuriforme is similar to Polymeridium cinereonigricans but can be distinguished by its much smaller ascospores and inspersed hamathecium. The ascomata measure 0.3–0.6 mm in diameter, with a solitary, spherical centrum that is erumpent. As the ascomata age, the wall expands up to 0.2 mm sideways. The ostiole is apical, and the hamathecium is inspersed. The ascospores number 6–8 per ascus, iodine-negative, somewhat muriform, and measure 18–20 by 6–7.5 μm. These ascospores are not ornamented and are surrounded by a 1–2 μm wide gelatinous sheath. No chemical substances have been detected in this lichen. The type specimen was collected from Leyte on tree bark.[2]
References
- ^ "Polymeridium submuriforme Aptroot". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 30 March 2023.
- ^ Aptroot, A.; Cáceres, M.E.S. (2014). "A refined species concept in the tropical microlichen genus Polymeridium (Trypetheliaceae) doubles the number of known species, with a world key to species". Nova Hedwigia. 98: 1–29.
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