Coprinopsis rugosomagnispora: a distinct new coprinoid species from Poland (Central Europe)

Abstract

A new coprinoid fungus, Coprinopsis rugosomagnispora, is described from Poland (Central Europe). Its macromorphological characters are similar to species belonging to the subsection Nivei of Coprinus s.l. However, C. rugosomagnispora has unique micromorphological characters: very large, ornamented spores, voluminous basidia and cystidia, and smooth veil elements. The large spores and pattern of spore ornamentation (densely pitted) make this species unique within all coprinoid species described so far. The structure (arrangement and shape) of veil elements in C. rugosomagnispora is intermediate between members of the subsections Nivei and Lanatuli of Coprinus s.l. Molecular phylogenetic analyses, based on single-locus (ITS) maximum likelihood and Bayesian evolutionary trees recovered C. rugosomagnispora within a lineage containing species having morphological characters of the subsection Lanatuli (though within the so-called Atramentarii clade) that contradicts its morphological similarity to members of the subsection Nivei.

Coprinopsis hispida: a new coprinoid species from lowland Northern Pakistan

“…Alopeciae. Of these, Coprinopsis alopecia (Lasch) La Chiusa & Boffelli has comparatively larger basidioma with pileus up to 100 mm diam, stipe 80-150 × 10-15 mm and larger basidiospores (11.5-14.0 × 6.5-8.0 µm), covered with warts (Gierczyk et al 2011, Wächter andMelzer 2020); C. fusispora has convex to plano-convex pileus covered with whitish floccose to filamentous veil, soon vanishing and remaining only in the center as brownish fibrils, and its basidiospores are broadly fusiform or submitriform and larger (9.0-12.5 × 5.5-7.5 µm) than those of C. hispida (Nagy et al 2013); C. rugosomagnispora described from Poland, has small-sized basidioma, covered with granulose veil forming squarrose, conical to nipple-shaped warts and can be easily differentiated from C. hispida by its substantially larger basidiospores (21.0-21.5 × 13.0-13.5 × 12.5-13.0 µm, on average 21.3 × 13.1 × 12.9 µm: Gierczyk et al 2017). Without molecular data, many coprinoid mushrooms are morphologically indistinguishable from closely related species (Raut et al 2011, Nagy et al 2013.…”

“…On the basis of the ML and BI phylogenetic reconstruction, the new species Coprinopsis hispida belongs to Coprinopsis (21.0-21.5 × 13.0-13.5 × 12.5-13.0 µm, on average 21.3 × 13.1 × 12.9 µm: Gierczyk et al 2017). Without molecular data, many coprinoid mushrooms are morphologically indistinguishable from closely related species (Raut et al 2011, Nagy et al 2013.…”