Hebeloma proletaria - A non-current Hebeloma species

According to our data Hebeloma proletaria is not the name of a current valid species of Hebeloma. Our database has records for the following similar names

Full name: Hebeloma proletaria Velen. (1920)
Published: Ceske Houby: 398 (1919) ["1920"]
Taxonomic status: We have not been able to unambiguously determine the current genus of this name.
Types: CZECH REPUBLIC: Krc (49.1142°N, 14.1454°E, alt. approx. 455 m a.s.l.), 1 May 1920, J. Velenovsky (Holotype. herbarium acc. no. PRC B101, HJB1000235).

The material is stored in bottle 101 in alcohol/formaldehyde at PRC; the information on the bottle's label matches the information in the protologue. This material can thus be regarded as the holotype.

Original diagnosis: Pileo 3-4 cm diam., subfirme carnoso, regulariter explanato-convexo, vix umbonato, glabro, levi, haud lucido, absolute absque velo, conspecte hygrophano (in statu semisicco zona marginali obscura ornato) udo obscure ochraceo, sicco albo tinctu roseo-Iutescenti, haud viscido. Stipite pilei diam. aequilongo, cylindraceo, 4-5 mm crasso, firmo, solido, fibrilloso, glabro, albo, immutabuli, apice squamuloso. Lamellis chocoladeis, acie albis, tenuibus, latis, ventricosis, postice rotundatis. Carne alba trita amoene resinaceo-olenti. Sporis obtuse ellipsoideis usque cuneatis, griseo-ochraceis, 6-8 μm. Cystidiis globosis, ellipsoideis, in parte media angustatis, lageniformibus, obtusis, brevibus, saepe vertice muricellatis (ut in speciebus nonnullis generis Inocybe). Ad murum in valle apud rivulum in silva prope Krc primo maio 1920 in grege. Bona species, Hebeloma macrosporum et H. odoratum in mentem revocans.

English translation: Pileus 2–4 cm diam., somewhat firm-fleshed, regularly expanding-convex, hardly umbonate, glabrous, smooth, not shiny, absolutely without veil, distinctly hygrophanous (in semi-dry state with a darker zone at margin) when moist dark ochraceous, when dry white with pinkish-yellow tinge, not viscid. Stipe length equal to diameter of pileus, cylindrical, 4–5 mm thick, firm, solid, fibrillose, glabrous, white, not staining, with squamulose apex. Lamellae chocolate-colour, with white edge, thin, broad, ventricose, rounded-attached. Context white, with pleasant resin-like odour when crushed. Spores bluntly ellipsoid, wedge-shaped, greyish-ochraceous, 6–8 μm. Cystidia globose, ellipsoid, narrowed in the middle, lageniform, blunt, short, often with crystals at apex (like in some species of the genus Inocybe). In a group on a wall in a river valley in forest near Krc first of May 1920. Good species. Reminiscent of Hebeloma macrosporum and H. odoratum.

Commentary: The ‘original diagnosis’ above is the translation into Latin from the original Czech by Pilat, Opera Bot. Čechica 6: 138 (1948). Unfortunately, due to the method of storage, it is not possible to amplify DNA. We made a microscopic examination of the holotype and it has metuloid cheilocystidia, as in Inocybe or Psathyrella. This is not a Hebeloma.