Yoshimuria

Yoshimuria is a genus of lichen-forming fungi in the family Teloschistaceae. It has four species of crustose lichens.

Taxonomy
The genus was circumscribed in 2014 by a group of lichenologists, who assigned Yoshimuria spodoplaca as the type species. Three species were originally included in the genus. The genus name honours the Japanese lichenologist Isao Yoshimura, "for his many contributions to lichenology in Eastern Asia".

Yoshimuria is in the subfamily Caloplacoideae of the family Teloschistaceae.

Description
Yoshimuria is characterised by a crust-like (crustose) thallus, which can vary greatly in thickness from very thin to thick and can be (i.e., divided by cracks into sections called ). The colour of the thallus ranges from whitish grey to dark grey or brownish grey. The apothecia of Yoshimuria (fruiting bodies) are either (with a ) or  (without a thalline margin), and are typically  (attached directly without a stalk). The disc of these apothecia can be yellow, orange, or dark rust-brown in colour. The the tissue surrounding the hymenium of the apothecia, is, meaning it consists of hard, thick-walled cells. The, the layer beneath the hymenium, does not contain oil droplets.

The of Yoshimuria are, meaning they have two distinct compartments, with eight spores in each ascus. The conidia, or asexual spores, are broadly (rod-shaped). Chemical spot tests reveal that the thallus reacts slightly or not at all (K±) and the apothecia turn purple (K+ purple) when treated with a potassium hydroxide solution. The chemical constituents include anthraquinones, which follow the parietin, and atranorin in some species.

Species

 * Yoshimuria galbina
 * Yoshimuria ivanpisutiana
 * Yoshimuria seokpoensis
 * Yoshimuria spodoplaca

Two species once proposed for inclusion in Yoshimuria are now included in other genera:


 * Yoshimuria cerussata is now Huea cerussata
 * Yoshimuria stipitata is now Gyalolechia stipitata.