Allopyrenis tenuis
| Allopyrenis tenuis | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lichinomycetes |
| Order: | Lichinales |
| Family: | Phylliscaceae |
| Genus: | Allopyrenis |
| Species: | A. tenuis |
| Binomial name | |
| Allopyrenis tenuis (Henssen) M.Schultz & M.Prieto (2024) | |
| Synonyms[1] | |
| |
Allopyrenis tenuis is a species of squamulose lichen-forming fungus in the family Phylliscaceae.[1] It was first described as a new species in 1963 by Aino Henssen, as Phylliscum tenue. The type of Phylliscum tenue was collected by Henssen in Humboldt County, California, at about 1,000 m (3,280 ft) elevation. The specimen was gathered from seepage-streaked exposed volcanic rock.[2] Matthias Schultz and María Prieto recombined the taxon into the new genus Allopyrenis in 2024, following a molecular phylogenetics-informed reorganization of the class Lichinomycetes.[3]
It has dark reddish-brown, roughly rounded squamules measuring about 0.5–0.75 mm across. The thallus surface is granulose because it is covered with clusters of lichenized cyanobacterial cells, about 20–50 μm wide; it lacks both lobules and surface areoles. Its fruiting bodies (apothecia) are small, about 200–250 μm wide, and sessile, with a prominent thalline margin but no proper exciple. The asci are club-shaped with rounded tips. In young apothecia, only a few primary paraphyses are present, and the discs are punctiform or only slightly opened.[4]
Initially described from specimens collected in California,[2] and later found in Alaska,[5] it has also been recorded from Venezuela.[4]
References
- 1 2 "Allopyrenis tenuis". Fungal Names. Retrieved March 26, 2026.
- 1 2 Henssen, A. (1963). "Drei neue Arten der Flechtengattung Phylliscum" [Three new species of the lichen genus Phylliscum]. Svensk Botanisk Tidskrift (in German). 57 (2): 145–160.
- ↑ Prieto, M.; Wedin, M.; Schultz, M. (2024). "Phylogeny, evolution and a re-classification of the Lichinomycetes". Studies in Mycology. 109: 595–655. doi:10.3114/sim.2024.109.09. PMC 11663425. PMID 39717657.
- 1 2 Schultz, M.; Porembski, S.; Büdel, B. (2000). "Diversity of rock-inhabiting cyanobacterial lichens: studies on granite inselbergs along the orinoco and in Guyana". Plant Biology. 2 (4): 482–495. doi:10.1055/s-2000-5951.
- ↑ Thomson, John W.; Ahti, Teuvo (1994). "Lichens collected on an Alaska highway expedition in Alaska and Canada". The Bryologist. 97 (2): 138–157. doi:10.2307/3243751. JSTOR 3243751.