Abstract
The present study deals with the descriptions of two Hirschioporaceae taxa from West Bengal, India, using morphological and molecular phylogenetic analyses of nrITS sequence data. Of these two taxa, Nigrohirschioporus violacaeruleum is newly described, while Pallidohirschiorus brastagii is a new record to West Bengal, India. Nigrohirschioporus violacaeruleum is characterized by a dimidiate, applanate, woody basidiocarp; a velutinate to glabrous, azonate upper surface coloured white to greyish violet; circular to angular pores (7–10 per mm) coloured lilac grey; dimorphic cystidia and inamyloid, ellipsoid to elongate basidiospores (3.5–6 × 2.5−3.0 µm). Pallidohirschioporus brastagii possess a sessile imbricate, pileate basidiocarp, an adpressed hispid, brownish orange concentrically zonate upper surface; a poroid to irpicoid hymenophore, apically encrusted, thick-walled cystidia, and inamyloid, cylindrical basidiospores (3‒5.5 × 1.5‒2.5 µm). Full descriptions, field photographs of the fruiting bodies, detailed morphological descriptions, and a molecular sequence-based phylogenetic tree, are provided.
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