Full name: Hebeloma dasypus (Romagn.) Singer (1951) ["1949"]
Published: The Agaricales in Modern Taxonomy 22: 538 (1951) ["1949"]
Taxonomic status: This is a Pholiotina.
Notes: Current name: Pholiotina dasypus (Romagn.) P.-A. Moreau, Fungal Divers. 20: 135 (2005).

Basionym: Naucoria dasypus Romagn. (1937)

Types: France, Paris, Jardin du Museum de Paris, among dead leaves in garden, Nov. 1934 (Holotype PC).

Homotypic synonyms: Alnicola dasypus (Romagn.) Romagn. (1944) ["1942"]

Original diagnosis: Pileo primum campanulato, dein expanso et plerumque ad margine resino, subcupuliforme, margine recta et saepe undulata, 2-3 cm., primum e rubiginoso fulvo, tandem lepide e fulvo ochraceo, non vel paene mammoso, rugato et longe udo striati, viscidulo, sicco ochraceo, tenui ac fragile. Stipite longo, 60-80 x 2-2,5 mm, paulum infra incrassato, fragile, mox cavo, argentato, longis fuscidulis fibris striato, primum furfuriculis albis eximie vestito, fugacissimus autem ita ut tandem fere glaber sit. Carne fulvida, fragillima, non olente. Lamellis modice stipatis, inaequalibus, anguste adnexis, dein subliberis, latis, maxime rotundatis, obtusis, primum argillaceis, dein ex rubiginose fulvis, in juventute in acie pallidioribus. Sporis subamygdalifomibus, minutissime punctatis, 10-11,5 x 5-6 μm. Basidiis 25-35 x 5-6 micr., 2-4 crassis sterigmatibus redimitis. Pilis marginem claviformibus, sursum globulosis, 27-40 x 10-14 micr.. Carne et trama lamellarum ex ovatis late cylindratis cellulis constant; cuticula parum distantes, cum ramosis, sinuosis hyphis lactiferis.

English translation: Pileus campanulate at first, then expanding, and often with revolute, 2–3 cm, margin, almost cup-shaped, with straight and often undulating margin, rusty brown at first, then a delightful ochre-yellow brown, not or hardly mammose, wrinkled and long striate when moist, viscid, ochre when dry, thin and fragile. Stipe long, 60–80 × 2–2.5 mm, slightly broadened at base, fragile, soon hollow, longitudinally fibrous striate with yellow brown fibrils on silvery background, at first covered with a thick pubescent layer, which is however very fugacious and finally it is almost bald. Context yellow-brown, very fragile, without odour. Lamellae moderately crowded, unequal, narrowly adnexed, then almost free, broad, maximally rounded, blunt, clay-coloured at first, then rusty yellow-brown, with much paler edge when young. Spores subamygdaloid, minutely punctate, 10–11.5 × 5–6 μm. Basidia 25–35 × 5–6 μm, with 2–4 μm long sterigmata. Marginal hairs claviform to globose, 27–40 × 10–14 μm. Context and trama of the lamellae made up of ovate or broadly cylindrical hyphal elements; cuticle poorly differentiated with branched, sinuose lactiferous hyphae.

Commentary: The holotype was studied by Moreau (2005). This is: = Pholiotina dasypus (Romagn.) P.-A. Moreau

Full name: Naucoria dasypus Romagn. (1937)
Published: Bulletin trimestriel de la Société Mycologique de France 53 (2): 121 (1937)
Taxonomic status: This is a Pholiotina.
Notes: Current name: Pholiotina dasypus (Romagn.) P.-A. Moreau, Fungal Divers. 20: 135 (2005).

Is basionym of: Hebeloma dasypus (Romagn.) Singer (1951) ["1949"]; Alnicola dasypus (Romagn.) Romagn. (1944) ["1942"]

Types: Holotype at PC, collected in France, Paris, Jardin du Museum de Paris, among dead leaves in garden, Nov. 1934.

Original diagnosis: Pileo primum campanulato, dein expanso et plerumque ad margine resino, subcupuliforme, margine recta et saepe undulata, 2-3 cm., primum e rubiginoso fulvo, tandem lepide e fulvo ochraceo, non vel paene mammoso, rugato et longe udo striati, viscidulo, sicco ochraceo, tenui ac fragile. Stipite longo, 60-80 x 2-2,5 mm, paulum infra incrassato, fragile, mox cavo, argentato, longis fuscidulis fibris striato, primum furfuriculis albis eximie vestito, fugacissimus autem ita ut tandem fere glaber sit. Carne fulvida, fragillima, non olente. Lamellis modice stipatis, inaequalibus, anguste adnexis, dein subliberis, latis, maxime rotundatis, obtusis, primum argillaceis, dein ex rubiginose fulvis, in juventute in acie pallidioribus. Sporis subamygdalifomibus, minutissime punctatis, 10-11,5 x 5-6 μm. Basidiis 25-35 x 5-6 micr., 2-4 crassis sterigmatibus redimitis. Pilis marginem claviformibus, sursum globulosis, 27-40 x 10-14 micr.. Carne et trama lamellarum ex ovatis late cylindratis cellulis constant; cuticula parum distantes, cum ramosis, sinuosis hyphis lactiferis.

English translation: Pileus campanulate at first, then expanding, and often with revolute, 2–3 cm, margin, almost cup-shaped, with straight and often undulating margin, rusty brown at first, then a delightful ochre-yellow brown, not or hardly mammose, wrinkled and long striate when moist, viscid, ochre when dry, thin and fragile. Stipe long, 60–80 × 2–2.5 mm, slightly broadened at base, fragile, soon hollow, longitudinally fibrous striate with yellow brown fibrils on silvery background, at first covered with a thick pubescent layer, which is however very fugacious and finally it is almost bald. Context yellow-brown, very fragile, without odour. Lamellae moderately crowded, unequal, narrowly adnexed, then almost free, broad, maximally rounded, blunt, clay-coloured at first, then rusty yellow-brown, with much paler edge when young. Spores subamygdaloid, minutely punctate, 10–11.5 × 5–6 μm. Basidia 25–35 × 5–6 μm, with 2–4 μm long sterigmata. Marginal hairs claviform to globose, 27–40 × 10–14 μm. Context and trama of the lamellae made up of ovate or broadly cylindrical hyphal elements; cuticle poorly differentiated with branched, sinuose lactiferous hyphae.

Commentary: See Hebeloma dasypus (Romagn.) Singer.

Full name: Alnicola dasypus (Romagn.) Romagn. (1944) ["1942"]
Published: Bulletin trimestriel de la Société Mycologique de France 58: 126 (1944) ["1942"]
Taxonomic status: This is a Pholiotina.
Notes: Current name: Pholiotina dasypus (Romagn.) P.-A. Moreau, Fungal Divers. 20: 135 (2005).

Basionym: Naucoria dasypus Romagn. (1937)

Types: Holotype at PC, collected in France, Paris, Jardin du Museum de Paris, among dead leaves in garden, Nov. 1934.

Homotypic synonym of: Hebeloma dasypus (Romagn.) Singer (1951) ["1949"]

Commentary: See Hebeloma dasypus (Romagn.) Singer.