| Oxneriopsis | |
|---|---|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Teloschistales |
| Family: | Teloschistaceae |
| Genus: |
Oxneriopsis S.Y.Kondr., Upreti & Hur (2017) |
| Type species | |
| Oxneriopsis oxneri (S.Y.Kondr. & Søchting) S.Y.Kondr., Upreti & Hur (2017)
| |
Oxneriopsis is a genus of lichen-forming fungi in the family Teloschistaceae. [1] It has four species of corticolous (bark-dwelling), crustose lichens.
Taxonomy
The genus was circumscribed in 2017 by the lichenologists Sergey Kondratyuk, Dalip Kumar Upreti, and Jae-Seoun Hur, with Oxneriopsis oxneri assigned as the type species. The genus name honours the Ukrainian lichenologist Alfred Mycolayovych Oxner (1898–1973). [2]
Description
Oxneriopsis features crustose lichens with a thallus that can be continuous, cracked, or divided into small, isolated units ( areoles). Often, this thallus forms vegetative reproductive structures ( propagules), known as phyllidia or schizidia, which are typically bright yellow or greenish-yellow, contrasting with the greyish or greenish-grey background of the main thallus. [2]
Their fruiting bodies ( apothecia) vary from lecanorine (with a thalline margin) to zeorine (without a thalline margin), and exhibit a range of colours from yellow and orange-brown to dark brown or even blackish brown. The thalline margin of the apothecia is usually a striking bright yellow. The hymenium, the tissue layer containing the spore-producing asci, is interspersed with oil. Each ascus typically contains eight spores that are polarilocular (having two distinct chambers) and hyaline (translucent). The conidia (asexual spores) of Oxneriopsis are rod-shaped ( bacilliform), measuring between 2.5 and 3.5 μm in length and 0.8 to 1 μm in width. [2]
Chemically, the genus is noted for the presence of fragilin in some species, but the chemical composition across all species within the genus is not thoroughly studied. [2]
Species
- Oxneriopsis bassiae (Ach.) S.Y.Kondr., Upreti & Hur (2020) [3]
- Oxneriopsis oxneri (S.Y.Kondr. & Søchting) S.Y.Kondr., Upreti & Hur (2017)
- Oxneriopsis taehaensis S.Y.Kondr., Lőkös & Hur (2019) [4]
- Oxneriopsis yeosuensis S.Y.Kondr., Upreti & Hur (2017)
References
- ^ "Oxneriopsis". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 29 December 2023.
- ^ a b c d Kondratyuk, S.Y.; Lőkös, L.; Upreti, D.K.; Nayaka, S.; Mishra, G.K.; Ravera, S.; Jeong, M.-H.; Jang, S.-H.; Park, J.S.; Hur, J.S. (2017). "New monophyletic branches of the Teloschistaceae (lichen-forming Ascomycota) proved by three gene phylogeny". Acta Botanica Hungarica. 59 (1–2): 71–136. doi: 10.1556/034.59.2017.1-2.6. hdl: 10447/414429.
- ^ Mishra, G.K.; Upreti, D.K.; Nayaka, S.; Thell, A.; Kärnefelt, I.; Lőkös, L.; Hur, J.-S.; Sinha, G.P.; Kondratyuk, S.Y. (2020). "Current taxonomy of the lichen family Teloschistaceae from India with descriptions of new species". Acta Botanica Hungarica. 62 (3–4): 309–391. doi: 10.1556/034.62.2020.3-4.5.
- ^ Kondratyuk, S.Y.; Lőkös, L.; Farkas, E.; Jang, S.-H.; Liu, D.; Halda, J.; Persson, P.-E.; Hansson, M.; Kärnefelt, I.; Thell, A.; Fačkovcová, Z.; Yamamoto, Y.; Hur, J.-S. (2019). "New and noteworthy lichen-forming and lichenicolous fungi 9". Acta Botanica Hungarica. 61 (3–4): 325–367. doi: 10.1556/034.61.2019.3-4.6.