Abstract
Cintractia carpophila var. kenaica, a neglected taxon described from Alaska more than half a century ago, is re-described and illustrated. Its nomenclature and taxonomic status are discussed. This smut species is characterised by small spores with a very finely verruculose surface rarely enclosed by a thin, hyaline, mucilaginous sheath, a wall with 2-5 distinct internal swellings, and parasitism on Carex micropoda (Carex sect. Dornera). It is reallocated to the genus Anthracoidea as a distinct species, Anthracoidea kenaica comb. nov., and assigned to Anthracoidea section Leiosporae which includes species having smooth or very finely verruculose spores. Morphological and biological characteristics of the five most similar Anthracoidea species are contrasted and discussed.
Highlights
Anthracoidea is the most species-rich genus of smut fungi on Cyperaceae
Detailed morphological characteristics of the holotype, isotype, and two non-type specimens of Cintractia carpophila var. kenaica are embraced in the species description and illustrated (Figs 1–2)
The internal soral structure in the holotype was typical of species of Anthracoidea in that the spores were produced directly on the outer surface of the achene, and not within U-shaped cavities embedded in sterile stroma, a characteristic of Cintractia (Kukkonen 1963, Kukkonen & Vaissalo 1964, Piepenbring 2000)
Summary
106 species are accepted in this genus (Denchev & Denchev 2011a, 2011b, 2012, Vánky & Abbasi 2011, Vánky 2012, Savchenko et al 2013), but this is certainly not a final number. Distinct species could still be hidden under different generic names, especially under historical names that have not been reassessed in recent years (Piątek 2012). Such historical names should be critically re-examined in addition to any comprehensive molecular studies directed to the description of novel Anthracoidea species
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