Full name: Hebeloma fusipes Bres. (1892)
Published: Bollettino della Società Botanica Italiana 1: 196 (1892)
Taxonomic status: Heterotypic synonym of H. nauseosum
Types: ITALY: Tuscany, Vallombrosa, Florence, Arezzo (approx. 43.7319°N, 11.5578°E, alt. approx. 970 m a.s.l.), 1892, U. Martelli, det: G. Bresadola (Holotype. herbarium acc. no. S F16132, HJB1000008).

Original diagnosis: Pileo carnosulo, convexo-gibboso, margine late infracto, viscido, albido-alutaceo, glabro, 2-4 cm. lato; lamellis latis, subdistantibus, postice sinuato-adnexis, cinnamomeis, acie albido fimbriata; stipite pallido, basi fusiformi-radicato, fibrilloso-glabrescente, e farcto subcavo, 6-8 cm. longo, 4-6 mm. crasso. Caro luride albida, ad basin stipitis fuscidula, odore subspirituoso-dulci, sapore miti; sporis subamygdaliformibus, vel obverse obovatis, luteis, 12-15 x 9-10 μ; basidiis c1avatis 30-35 x 9-10 μ. Hab. ad terram Vallumbrosae (Leg. U. Martelli). Obs. Pileus saepe rubro-maculatus. Hebelomati clavicipiti affinis.

English translation: Pileus thin-fleshed, convex-umbonate, with involute margin, viscid, white-yellowish, glabrous, 2–4 cm broad; lamellae broad, subdistant, sinuate-adnexed, cinnamon-coloured, with white fimbriate edge; stipe pale, with fusiform-radicating base, fibrillose, glabrescent, solid then hollow, 6–8 cm long, 4–6 mm thick. Context sordid yellow-white, brownish in base of stipe, odour subspirituous-sweet, taste mild. Spores subamygdaloid, or rounded-subovoid, yellow, 12–15 × 9–10 μm; basidia clavate, 30–35 × 9–10 μm. Terrestrial in Vallumbrosa (Leg. U. Martelli). Observations: pileus often reddish spotted. Close to Hebeloma clavipes.

Commentary: Unfortunately, we have not been able to generate any sequence from the holotype, but we have studied the morphology and the protologue. This species is clearly from Hebeloma sect. Sacchariolentia. We have measured the spores as, on average, 13.2 × 8.4 µm. There is no mention of the pileus cuticle breaking up into squamules, so this can only be: = Hebeloma nauseosum (Cooke) Sacc.

Full name: Hebelomatis fusipes (Bres.) Locq. (1979) [“1977”]
Published: Flore Mycologique Vol III - Text. Cortinariales A: 146 (1979) ["1977"]
Taxonomic status: Heterotypic synonym of H. nauseosum
Notes: Nom. inval. (Art. 41.5 - Melbourne).

Types: ITALY: Tuscany, Vallombrosa, Florence, Arezzo (approx. 43.7319°N, 11.5578°E, alt. approx. 970 m a.s.l.), 1892, U. Martelli, det: G. Bresadola (Holotype. herbarium acc. no. S F16132, HJB1000008).

Homotypic synonyms: Hebelomatis fusipes (Bres.) Locq. (1979) [“1977”]

Homotypic synonym of: Hebelomatis fusipes (Bres.) Locq. (1979) [“1977”]

Commentary: See Hebeloma fusipes Bres.