Fissurina varieseptata
species of fungus
Fissurina varieseptata is a species of crustose lichen in the family Graphidaceae. It is known from Florida. It has small, fissure-like lirellae (slit-like fruiting structures) and ascospores that usually have 5–7 transverse septa (internal walls), rather than the more typical three in closely similar species.
Taxonomy
Fissurina varieseptata was described as a new species in 2011 by Ralph Common and Robert Lücking. The holotype (the single specimen designated as the name-bearing type; Common 7413A) was collected in April 1997 in Fakahatchee Strand Preserve State Park (Collier County, Florida), at Big Cypress Bend in an old-growth cypress swamp. It is deposited in the herbarium of the Michigan State University Museum (MSC).
The specific epithet refers to the variable number of transverse septa in the ascospores. The species is superficially similar to Fissurina illiterata and may be closely related, but it can be separated by its much more strongly septate spores, a feature unusual in the genus.
Description
The thallus forms a continuous crust on bark, 1–5 cm across and about 40–70 μm (micrometres) thick. The surface is smooth to uneven and typically yellowish white.
“Fissurina varieseptata” enters the record as species of fungus. Crown Archives preserves that source wording while asking what Fissurina, varieseptata and species can confirm, complicate or overturn.
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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 Aug 6, 2026. The linked authority identifier is Q17387858. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2011 and 1997.
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This entry incorporates text from “Fissurina varieseptata” 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.