Full name: Hebeloma remyi Bruchet (1970)
Published: Bull. Mens. Soc. Linn. Lyon 39, supplement 6: 29 (1970)
Taxonomic status: Heterotypic synonym of H. discomorbidum
Notes: In Beker et al. (2016) this taxon was given as invalid under Art. 40.1 as no type had been selected by Remyi for H. mesophaeum var. macrosporum and Bruchet also did not designate a type. Given the concensus that, based on the year of publication, H. mesophauem var. macrosporum should be regarded as valid so H. remyi is also valid.

Basionym: Hebeloma mesophaeum var. macrosporum L. Rémy (1965) ["1964"]

Types: Remy, Bulletin trimestriel de la Société Mycologique de France 80 (4): 29 (1965) ["1964"] 531, Fig. 14, lectotype (icon) designated by Eberhardt et al., Mycologia 114 (2): (2022) page 365 (MBT10001175)

FRANCE: Isere, Lac Luitel (approx. 45.0881°N, 5.8497°E, alt. approx. 1300 m a.s.l.) on boggy, mossy soil in deciduous bog under Betula sp. and Salix sp., 11 Oct. 1965, G. Bruchet (Epitype. herbarium acc. no. LY BR65-23, HJB11808). Epitype designated by Eberhardt et al., Mycologia 114 (2): (2022) page 365 (MBT10001176).

Commentary: See Hebeloma mesophaeum var. macrosporum Remy.

Full name: Hebeloma remyi Bruchet ex Quadr. (1989) [“1988”]
Published: Mycol. Helv. 3 (2): 193 (1989) ["1988"]
Taxonomic status: Heterotypic synonym of H. velatum
Types: ITALY: Trentino-Alto Adige/Südtirol, Monte Bondone (Trento), Torbiere della Viote (46.012°N, 11.0239°E, alt. approx. 1550 m a.s.l.) under Betula pubescens, 14 Aug. 1984, L. Quadraccia (Holotype. herbarium acc. no. ROHB00874, HJB1000220).

Original diagnosis: Pileus 13-45 mm latus; convexus-hemisphericus vel convexus-subcampanulatus deinde plano-convexus usque ad depressus margin incurvo vel subreflexo. Cuticula aequalis, interdum leviter rugulosa, a sicca, quasi flocculoso-lanata ad subviscosam, saepe margine ornate vestigiis cortinae sparsis ac plus minusve firmis, plus minusve discolor, in medio fuscus vel atrofuscus, in margine fusco-ochraceus vel ochraceo-flavidus, interdum subconcolor brunneo-ochraceus. Lamellae mediocriter confertae, 5-6 mm latae, adnato-decurrentes, lamellulis sinuosis interpositus, siccae et numquam sporis maculatae, ab albidis ad cremeo-ochraceas usque ad flavido-ochraceas; acies dilutior leviter erosa. Stipes 16-55(-70) x 1.5-4.5 (6) mm, rectus vel sinuosior, subaequalis, interdum deorsum modice incrassatus, fragilis, plenus vel fistulosus, apice pruinosus, alibi fibrillosus, albidus usque ad fusco-tabacinum, infima parte umbrinus praesertim tactu. Cortina copiosa, gossypina, ad albida ad fuscam, sed fugax, vestigiis plus minusve manifestis in superficie stipites et margine pilei. Caro medio pilei tenuis, albida vel cremeo-ochracea, stipites atrofusca; odor nullus vel subraphanoideus lecto, raphanoides secto saepe evanido; sapor certe raphanoides et amariusculus. Sporae (8,5-)10-12,5(-15) x (5,5-)6-7(-8) μm, amygdaliformes vel ovatae-amygdaliformes, sublaeves vel leviter punctatae, tenuiter dextrinoideae annon, tenui colore flavo sub microscopico optico. Basidia 24-45 x 8-12 μm plerumque tetrasporica, aliquando bisporica. Cheilocystidia (32) 40-65 (70) x 7-10(-15) μm, lageniformia vel sublageniformia, recta vel geniculata, interdum uniseptata in parte proximali, apex obtusus interdum subcapitulatus x 4-7(-8) μm. Pleurocystidia nulla. Caulocystidia similia cheilocystidiis, longiora (usque ad 95 μm), saepe uniseptata vel biseptata. Epicutis subtili ixocute composite ex hyphis gracilibus; cutis non monifesta; subcutis typice pseudoparenchymatica, hyphis constitua pigmento membranario brunneo-rufescenti vivide tinctis. Fibulae adsunt. Habitat in locis montanis in phytocenosis hygrophilis, 1200-2350 metra supramare, praecipue sub Salicibus et Betulis, in stagni margine, prope rivulos, saepe in turfosis inter Sphagna et aliam plantam hygrophilas (id est Carex spp, Eriophorum spp., Drosera rotundifolia L., Trichlochin alustre L., Valeriana dioica L.).

English translation: Pileus 13–45 mm broad, convex or hemispherical to convex-subcampanulate then plano-convex up to depressed with incurved to subreflexed margin. Cuticle smooth, sometimes slightly rugulose, dry, quasi floccose-woolly to subviscid, at margin often ornamented with sparse, but relatively firm remnants of cortina, more or less discoloured, centre dark brown to blackish brown, margin brown-ochre or ochre-yellow, sometimes subconcolourous brownochre. Lamellae moderately crowded, 5–6 mm broad, adnate-subdecurrent, interspersed with sinuose lamellae, dry and never spotted with spores, white or cream-ochre then yellow-ochre, with paler, slightly eroded edge. Stipe 16–55(–70) × 1.5–4.5(–6) mm, straight or curved, subequal, sometimes slightly broadened at base, fragile, stuffed or hollow, pruinose at apex, white fibrillose, white up to tobacco brown, turning umber especially when touched. Cortina abundant, cottony, white to dark brown, but ephemeral, present in more or less obvious remnants on the stipe and at margin of the pileus. Context thin at centre of pileus, white or creamy-ochre, blackish brown in stipe; odour none or subraphanoid, when cut raphanoid, often evanescent, taste distinctly raphanoid and slightly bitter. Spores (8.5–)10–12.5(–15) × (5.5–)6–7(–8) μm, amygdaloid or ovate-amygdaloid, almost smooth or slightly punctate, slightly or not dextrinoid, with weak yellow colour, under microscope. Basidia 24–45 × 8–12 μm, often four-spored, sometimes bispored. Cheilocystidia (32)40–65(–70) × 7–10(–15) μm, lageniform to sublageniform, straight or bent at base, sometimes uniseptate in proximal part, with blunt, sometimes subcapitulate apex, × 4–7(–8) μm. Pleurocystidia absent. Caulocystidia similar to cheilocystidia but longer (up to 95 μm), often uniseptate or biseptate. Epicutis a subtle ixocutis made up of slender hyphae; cutis not manifest; subcutis of the pseudoparenchymatic type, consisting of hyphae with vivid brown-reddish membranal pigment. Clamp connections present. Growing in mountainous areas in hygrophilous vegetation, 1200–2350 m alt., particularly with Salix and Betula, at margin of swamps, near rivulets, also in peat among Sphagnum and other hygrophilous plants (like Carex spp., Eriphorum spp., Drosera rotundifolia, Triglochin palustre, Valeriana dioica).

Commentary: Quadraccia clearly erected this species to validate Bruchet’s H. remyi which was considered to be invalid as no type had been designated. Since Hebeloma remyi is now considered as validly published, this name is superfuous and hence is a nom. illegit. (Art. 52.1 - Melbourne). Unfortunately, the material Quadraccia designated was of a different species. We have examined this material, and although we were unable to generate an ITS sequence, we are confident this species is: = Hebeloma dunense L. Corb. & R. Heim.