Hebeloma latifolium - A non-current Hebeloma species

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

Full name: Hebeloma latifolium P. Karst. (1898)
Published: Kritisk Öfversigt af Finlands Basidsvampar 3: 7 (1898)
Taxonomic status: This is a Pholiota.
Types: No type designated. Authentic material from Finland: Fennia,Tavastia australis, Tammela, Salois (=Saloinen; Mustiala N), on bark of Betula, Aug. 1897, J.I. Lindroth det. P.A. Karsten (H6030116 (2887); Database Record 14142).

Original diagnosis: Hatten n. köttig, först kullrig, sedan platt, understundom i midten n. nedtryckt, slät, glatt, torr, blek, stötande n. i lergrått, vid torkning blekt sämskfärgad, 3-4 cm bred. Foten jemntjock, krumböjd, knappt fintrådig, upptil hvitpudrat, blek, omkring 3 cm hög. Lamellerna fastväxra, lätt lossnande, tättsittande, breda, n. triangelförma, blekt lerfärgade, slutligen stötande I brunt, I eggen n. hvittnaggade. Sporerna eliptiska, trubbiga, understundom oliksidiga, ljust gulaktiga (under mikr.), omkring 8 – 4 mmm. Gammal björkbark.

English translation: Pileus somewhat fleshy, hemispherical at first then applanate, sometimes slightly depressed at centre, smooth, glabrous, dry, pallid, changing to leather-grey, when dry pale chamois, 3–4 cm broad. Stipe equal, curved, barely fibrillose, white powdered at apex, pallid, about 3 cm high. Lamellae adnate, slightly loosening, crowded, broad, somewhat triangular, pale leather coloured, finally turning brown, slightly white notched. Spores ellipsoid, blunt, sometimes unequal, pale yellowish (under microscope), about 8 × 4 μm. On old bark of Betula.

Commentary: We have studied the authentic material and find that the species belongs in Pholiota P. Kumm. According to E. Rald (herbarium note) this name is a synonym of P. tuberculosa (Schaef.) P. Kumm.

Full name: Hebeloma latifolium Gröger & Zschiesch. (1981)
Published: Z. Mykol. 47 (2): 198 (1981)
Taxonomic status: Heterotypic synonym of H. sacchariolens
Notes: Nom. illegit. (Art. 53.1), non Hebeloma latifolium P. Karst., Krit. Öfvers. Finl. Basidsvamp. 3: 7 (1898). Name replaced by Hebeloma pallidoluctuosum Gröger & Zschiesch., in Hirsch, Wiss. Z. Friedrich Schiller-Univ. Jena, Math-Nat. Reihe 33: 815 (1984).

Types: GERMANY: Thuringia, See-ecke near Ballstadt (approx. 51.0416°N, 10.7447°E, alt. approx. 330 m a.s.l.) on calcareous soil in deciduous woodland under Carpinus sp., Corylus sp., Quercus sp. and Tilia sp., 18 Sep. 1978, F. Gröger, det: Groger (Holotype. held at herbarium JE, HJB1000149).

Homotypic synonym of: Hebeloma pallidoluctuosum Gröger & Zschiesch. (1984); Hebeloma sacchariolens var. pallidoluctuosum (Gröger & Zschiesch.) Quadr. (1987)

Original diagnosis: Locus typi: Thuringia, in silva frondosa mixta “See-Ecke”, near Ballstädt (near Goha), ad terram super formatione geologica (Muschelkalk). Leg. F. Gröger. (Holotypus in JE). Quoad odorem Hebelomati sacchariolenti. H. tomentoso, H. gigaspermo et H. fusisporo simile. Sed H. sacchariolens est species acidophila, quae manet laetiore colore usque ad summam senectutem et differ sporis laetioribus. H. tomentosum differt pileo tomentoso et habitu maiore. H. gigaspermum differ sporis maioribus et cheilocystidiis capitatis. H. fusisporum differt cheilocystidiis longioribus et sporis. Cortina nulla. Pileo albido, pallide ochraceo-griseo, fulvescente, in media parte sordide fusco-ochraceo, convexo, hemisphaerico, cum margine diu deorsum recundata, glabro. 2-4.5(6) cm. Lamellis instar coffeae cum lacte mixtae coloratis, brunneo-ochraceis, postremo valde obscuris, fere umbrinis, distantibus, latissimis, ventricosis, sinuatis, vix albomarginatis, sed mox undulatis usque crenato-serratis, non lacrimantibus. Stipite primo albido, cito fuscescente vel nigrescente (primo ad basim), sub lamellis minutissime albo-floccoso, ad basim leviter angustata sed non radicante, 2,5-4,5(6) x 0,3-0,7(1) cm. Carne primo laeta, deinde (primo ad basim) fuscescente, postea (praecipue in exsiccates) nigrescente. Odore intenso, Hebelomati sacchariolenti simili, sapore leviter amaro. Sporis 11-14,5 x 5,5-8 μm, intense luteo-fuscis, latius amygdaliformibus vel citriformibus, distincte verrucosis: pulvere brunneo. Cheilocystidiis fere lageniformibus. utriformibus usque subclaviformibus (numquam capitatis!), 33-50 x 5-12 μm.

English translation: In odour similar to H. sacchariolens, H. tomentosum, H. gigaspermum and H. fusisporum. But H. sacchariolens is an acidophilous species, which remains paler coloured to extreme old age, and differs in having more brightly coloured spores. Hebeloma tomentosum differs by the tomentose pileus and larger basidiomes. Hebeloma gigaspermum differs by larger spores and capitate cheilocystidia. Hebeloma fusisporum differs by longer cheilocystidia and spores. Cortina absent. Pileus whitish, pale ochre-grey, turning brown, at centre sordid brownochre, convex, hemispherical, with long-time involute margin, glabrous, 2–4.5(–6) cm. Lamellae with the same colour as milky coffee, brown-ochre, finally much darker, almost umber, distant, very broad, ventricose, sinuate, hardly white margin, but soon undulate then crenulate-serrate, not weeping. Stipe white at first, then turning brown or blackening (first at base), between the lamellae minutely white floccose, at base slightly narrowed and not rooting. Odour intense, like Hebeloma sacchariolens, taste slightly bitter. Spores 11–14.5 × 5.5–8 μm, intense yellow-brown, broadly amygdaloid or citriform, distinctly verrucose, in mass brown. Cheilocystidia more or less lageniform, utriform to subclaviform (never capitate), 33–50 × 5–12 μm.

Commentary: See Hebeloma pallidoluctuosum Gröger & Zschiesch.