Oxneriopsis

Oxneriopsis is a genus of lichen-forming fungi in the family Teloschistaceae. 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).

Description
Oxneriopsis features crustose lichens with a thallus that can be continuous, cracked, or divided into small, isolated units. Often, this thallus forms vegetative reproductive structures (propagules), known as or, which are typically bright yellow or greenish-yellow, contrasting with the greyish or greenish-grey background of the main thallus.

Their fruiting bodies vary from  (with a ) to  (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 (having two distinct chambers) and hyaline (translucent). The conidia (asexual spores) of Oxneriopsis are rod-shaped, measuring between 2.5 and 3.5 μm in length and 0.8 to 1 μm in width.

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.

Species

 * Oxneriopsis bassiae
 * Oxneriopsis oxneri
 * Oxneriopsis taehaensis
 * Oxneriopsis yeosuensis