Japewia
genus of fungi
Japewia is a genus of lichen-forming fungi in the family Lecanoraceae. The genus was circumscribed in 1990 by the Norwegian lichenologist Tor Tønsberg, who assigned J. tornoënsis as the type species. The new genus is named in honour of Peter Wilfred James, a notable lichenologist, with Japewia being derived from the first letters of his initials (Ja) and his surname (Pe) followed by a typical Latin suffix (-wia).
Description
Japewia species incorporate green algae from the order Chlorococcales into their structure. The main body of the lichen, the thallus, is crust-like and firmly attached to the surface it grows on. The apothecia (fruiting bodies) are typically attached to the thallus and can either have a distinct margin or lack one. These apothecia are biatorine (simple and cup-shaped) and chestnut-coloured.
The paraphyses (sterile filamentous cells in the apothecia) and the exciple (the outer layer surrounding the apothecia) have hyphae (fungal filaments) that are coated with a gelatinous sheath. These hyphae are dark on the outside, branched, and interconnected. When treated with potassium hydroxide soluition (K), the gelatinous sheath dissolves.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Sep 21, 2024. The linked authority identifier is Q6159285. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1990.
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This entry incorporates text from “Japewia” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.