“…Inocybe tjallingiorum Kuyper usually has a darker centre of the pileus, no purple tinges in the pileus colour, stipe with age intense brown to red-brown or even darker, and much smaller, (sub)amygdaloid to (sub)ellipsoid spores (Kuyper 1986;stangL 1989;Bandini et al 2021c), whereas I. serotina has a larger, paler patch of velipellis at the pileus centre, larger, mostly (sub)amygdaloid and not almost kidney-shaped spores and mostly (sub)clavate or subglobose hymenial cystidia. Furthermore, I. serotina is usually found on sea-shores (peCK 1904;Lange 1940;Kuyper 1986; DB, personal observation). The Mediterranean species I. neorufula Esteve-Rav., Macau & Ferville differs from I. centesima, e.g., by the whitish velipellis, more reddish-tinged, much smaller, not almost kidneyshaped spores and on average longer hymenial cystidia (esteve-raventós et al 2012; DB, personal observation), and I. rufuloides, e.g., by the lack of purple tinges in the pileus colour, less smooth pileus surface, (sub)amygdaloid or almost elliptic, not almost kidney-shaped spores and often subcapitate on average shorter hymenial cystidia (see below).…”