Lepraria isidiata
species of fungus
Lepraria isidiata is a species of leprose lichen in the family Stereocaulaceae. It occurs in Mediterranean Europe, where it grows on calcareous soil and rock surfaces.
Taxonomy
Lepraria isidiata was first described by Xavier Llimona in 1973 as a variety of Lepraria crassissima. It was later elevated to species status by Llimona and Ana Crespo in 2004. The type specimen was collected in Spain.
Description
The species forms a crustose to subfoliose thallus that ranges from membranous to granular in texture. It has a well-defined margin with distinct lobes that have raised edges. The thallus sometimes develops a light brownish hypothallus (attachment layer), and may have patches with a subcorticate (partially corticate) surface. One of its most distinctive features is the presence of coarse granules that resemble true isidia, measuring 0.32–0.54 mm in diameter. These structures have a compact outer layer and lack projecting hyphae.
Begin with the source’s own compact description: “Lepraria isidiata” is species of fungus. The dossier treats that line as a proposition to test through Lepraria, isidiata and species, not as a finished interpretation.
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The phrase “species of fungus” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Jan 30, 2025. The linked authority identifier is Q17388203. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1973 and 2004.
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This entry incorporates text from “Lepraria isidiata” 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.