Nitschkiopsis Nannf. & R. Sant., in Nannfeldt, Svensk bot. Tidskr. 69(3): 322 (1975)
Hypocreomycetidae, Hypocreales, Niessliaceae, Nitschkiopsis
Index Fungorum number: IF 3516; 1 morphological species.
Lichenicolous. Sexual morph: Ascomata perithecial, solitary or scattered, semi-immersed to superficial, globose to subglobose, or collapsing as cupuliform, brown to black, with metallic iridescence, membranaceous, surrounded by two types of setae, ostiolate, periphysate. Setae oblong to cylindrical, hyaline, with swollen apex; conical, spinous, brown to dark brown. Peridium composed of membranaceous, pale brown to reddish brown to hyaline cells of textura angularis to textura prismatica. Paraphyses absent. Asci 8-spored, unitunicate, cylindrical, pedicellate, apex blunt, apical ring indistinct, evanescent. Ascospores uni- or bi-seriate, hyaline, ellipsoidal to oval, 0–1-septate, smooth-walled, guttulate. Asexual morph: Undetermined (copied from Huang et al. 2021).
Type species: Nitschkiopsis stictarum Nannf. & R. Sant., Svensk bot. Tidskr. 69(3): 322 (1975)
Notes: The monotypic Nitschkiopsis was introduced by Nannfeldt & Santesson (1975) for N. stictarum. This lichenicolous genus was initially related to Lasiosphaeriaceae and Nitschkiaceae (Nannfeldt & Santesson 1975). However, Tretiach (2002) transferred it as Niesslia stictarum and introduced another similar lichenicolous species, Nie. robusta. In the study by Huang et al. (2021), it was found that Nitschkiopsis has perithecial ascomata with hyaline setae similar to Nie. nolinae; and spinous setae similar to Nie. chaetomium, differing from it in the possessing of ellipsoidal ascospores. Since Niesslia is polyphyletic in the study by Huang et al. (2021), Nitschkiopsis has been accepted with two kinds of setae as an independent genus in Niessliaceae pending molecular data (copied from Huang et al. 2021).
Species illustrated in this entry:
Nitschkiopsis stictarum Nannf. & R. Sant.
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