Full name: Hebeloma edurum Métrod (1946)
Published: Revue de Mycologie 11: 80 (1946)
Taxonomic status: Heterotypic synonym of H. laterinum
Notes: Nom. inval. (Art 39.1 - Melbourne), replaced by Hebeloma edurum Métrod ex Bon (1985)

Types: France, Somme, near Bouillancourt-en-Sery, under Pinus, M. Bon (Holotype LIP MB no. 71108 but we have been unable to locate the holotype in LIP).

Homotypic synonym of: Hebeloma edurum Métrod ex Bon (1985)

Commentary: See Hebeloma edurum Métrod ex Bon.

Full name: Hebeloma edurum Métrod ex Bon (1985)
Published: Documents mycologiques 16 (61): 16 (1985)
Taxonomic status: Heterotypic synonym of H. laterinum
Notes: Published as nom. nov. for Hebeloma edurum Métrod

Types: France, Somme, near Bouillancourt-en-Sery, under Pinus, M. Bon (Holotype LIP MB no. 71108 but we have been unable to locate the holotype in LIP).

Homotypic synonyms: Hebeloma edurum Métrod (1946); Hebelomatis edurum Locq. [ as "(Métrod) Locq."] (1979) ["1977"]

Original diagnosis: Pileus 5-10(-12) cm, convexo-carnosus, cuticula viscosa dein nitenti, coloribus ochraceis vel sordide cremeo-argillaceis; margine involuta, +/- pubescenti vel crenulata, pallidiore. Lamellae ventricosae, emarginatae, argilaceae, acie fimbriata. Stipes 5-12(-15) x 0,5-1,5 (2) cm, subaequalis vel clavatus, albidus vel cremeo-ochraceus, sursum floccosus, deorsum laevis sed brunnescens vel de tactu brunnescens. Cortina nulla. Caro pallida, in stipites sordide brunnescens, odore debili dein pirum vel cacao revocante, sapore dulci vel amarescenti. Spores amygdaliformes 9-11(-12) x 5-6(-6,5) μm, verrucosae-punctulatae. Cheilocystidia subcylindracea vel leviter clavata 30-50 x 4-6(-8) μm. Suprapellis hyphis gracilibus x 2-4(-5) μm, gelatinosis (ixocutis); mediopellis hyphis crassioribus x 8-10(-15) μm, +/- pigmentatis; subpellis pseudoparenchymatica, hyphis latioribus vel polygonalibus usque x 25(-35) μm. Caulocystidia pilis +/- clavatis, cheilocystidia revocantes. Sub coniferis lectus, praecipue in Pinetis, in sylvis frondosis rarior.

English translation: Pileus 5–10(–12) cm, convex, fleshy, viscid then shiny, ochre to sordid cream-coloured brown with involute, paler brown, pubescent or crenulate margin. Lamellae ventricose, emarginate, pale brown, with fimbriate edge. Stipe 5–12(–15) × 0.5–1.5(–2) cm, subequal to clavate, white or creamy-ochraceous, floccose at apex, smooth below, but turning brown, also after handling. Cortina absent. Context pale, changing to sordid brown in stipe, odour weak, then like pears or reminiscent of cocoa, taste mild or slightly bitter. Spores amygdaloid 9–11(–12) × 5–6(–6.5) μm, verrucose-punctate. Cheilocystidia subcylindrical to slightly clavate 30–50 × 4–6(–8) μm. Suprapellis of slender, gelatinized hyphae, 2–4 (5) μm wide (ixocutis); mediopellis of wider, × 8–10(–15) μm, more or less pigmented hyphae; subpellis pseudoparenchymatic made up of broad, polyangular hyphal elements, × 25(–35) μm. Caulocystidia in form of more or less clavate hairs, reminiscent of cheilocystidia. Collected under conifers, especially in pine woodlands, much rarer in deciduous forest.

Commentary: Unfortunately, we have been unable to locate the type material. However, based on the description, we have no doubt that this taxon is: = Hebeloma laterinum (Batsch) Vesterh.

Full name: Hebelomatis edurum Locq. [ as "(Métrod) Locq."] (1979) ["1977"]
Published: Flore Mycologique Vol III - Text. Cortinariales A: 146 (1979) ["1977"]
Taxonomic status: Heterotypic synonym of H. laterinum
Notes: Nom inval. (Art. 41.5), but again with no Latin diagnosis, so also nom. inval. (Art. 39.1 - Melbourne).

Types: France, Somme, near Bouillancourt-en-Sery, under Pinus, M. Bon (Holotype LIP MB no. 71108 but we have been unable to locate the holotype in LIP).

Homotypic synonym of: Hebeloma edurum Métrod ex Bon (1985)

Commentary: See Hebeloma edurum Métrod ex Bon.