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According to our data Hebeloma pallidum is not the name of a current valid species of Hebeloma. Our database has records for the following similar names
Full name: Hebeloma pallidum Malençon (1970)
Published: Champ. Sup. Maroc I. Institut Scientifique Chérifien, Rabat 1: 452 (1970)
Taxonomic status: Heterotypic synonym of H. subtortum
Notes: Nom. illegit. (Art. 53.1), non Hebeloma pallidum P. Kumm., Führ. Pilzkde: 80 (1871). Replacement names Hebeloma malenconii Bellú & Lanzoni (1989) and Hebeloma mesophaeum var. lacteum Vesterh. (1989).

Types: MOROCCO: Azrou (33.4167°N, 5.2167°W, alt. approx. 1750 m a.s.l.) in mixed woodland under Cedrus sp., Pinus sp. and Quercus sp., 8 Nov. 1941, G. Malençon (1123) (Holotype. held at herbarium MPU, HJB1000096).

Homotypic synonym of: Hebeloma malenconii Bellú & Lanzoni (1989); Hebeloma mesophaeum var. lacteum Vesterh. (1989)

Original diagnosis: Pileo convexo disco gibboso carnuloso, 35-45(55) mm lato, cute usque ad centrum separabili, linea filamentosa flavida supra marginem circumdato cortinato, ceterum nudo, disco argillaceo, ambitu pallescente subalbido, udo viscido, sicco opaco, non hygrophano. argine involuta, haud costata, tarde explanata, ex appendiculata nuda. Stipite fistuloso, enaci, gracili, aequali, 55-70 x 4-6(8) mm, e velo cortiniformi superne rufo-annulato, fibrilloso sed apice pruinoso, ex albido stramineo tandem deorsum extus intusque ferruginascente dein fuscescente. Lamellis latis subdistantibusque, emarginatis, albidis dein argillaceis, acie undulata pallidiori nunquam plorante. Carne inodora, miti, in pileo albida vel roseo-isabellina, molliuscula, in stipite fibrososo-fissili, fusca. Basidiis cylindraceis 4-sporis: 30-35 x 6-7 μm, sterigmatis 4.5-5 μm alt. exclusis. Sporis obeso-pruniformibus apice non papillatis, pallide luteis s.l., laevibus vel rarisisme obscure subrugulosis, brevibus: (7,8)8-10,5(11,7) x (4,8)5,2-6,7(7) μm frequenter: 9-10 x 5,3-6,4 μm. Cystidis veris nullis sed acie lamellarum pilis brevibus (35-40), interne inflates (6-9), superne obtusis et muco hyaline obtectis, heteromorpha. Cute pilei gelificata ex hyphis 2 μm latis horizontaliter laxeque intertextis composita constante. Articulis hypharum omnibus fibuligeris. Habitat: solitarium vel caespitosum ad vias et in graminosis lacis sylvarum montium, autumno; in Atlante medio, supra Azrou, haud rarum.

English translation: Pileus convex with gibbose, fleshy centre, 35–45 (55) mm broad, with separable cuticle up to centre, with cortinate veil at margin in form of yellowish lines, but for the rest naked, with clay-coloured centre, in outline pallescent, whitish, viscid when moist, opaque when dry, not hygrophanous; with involute, not ribbed, later expanding, equal margin, naked apart from the appendiculate veil remnants. Stipe hollow, slender, gracile, equal, 55–70 × 4–6 (8) mm, with reddish annulus from cortinate veil, fibrillose but with pruinose apex, white then straw-coloured, finally turning reddish brown to greyish brown both in- and outside. Lamellae broad, subdistant, emarginate, white then clay-coloured, with paler, undulating, never weeping edge. Context without smell, mild, white to pinkish-tawny-yellow in pileus, very soft, brown and fibrous-splitting in stipe. Basidia four-spored, 30–35 × 6–7 μm exclusive of the 4.5–5 μm long sterigmata. Spores gross pruniform with non papillate apex, pale yellow under the microscope, smooth or rarely obscurely subrugulose, short, (7.8) 8–10.5 (11.7) × (4.8) 5.2–6.7 (7) μm frequently: 9–10 × 5.3–6.4 μm. True cystidia absent but lamella edge heteromorphic with short hairs (35–40 [μm]), with inflated base (6–9 [μm]) and blunt at apex, covered with a hyaline mucus. Pileus cuticle gelatinized, made up of 2 μm wide horizontally, loosely interwoven hyphae. Hypha septate constantly clamped. Habitat solitary or in groups, along roads and in grassy spots in the depths of mountain forests in the central Atlas Mts. above Azrou, not rare.

Commentary: See Hebeloma malenconii Bellú & Lanzoni (1989).

Full name: Hebeloma pallidum P. Kumm. (1871)
Published: Der Führer in die Pilzkunde: 80 (1871)
Taxonomic status: We have not been able to unambiguously determine the current genus of this name.
Types: Not designated.

Original diagnosis: Geruch nicht auffällig, schleimig, wässerig-fleischig, von Anfang an weisslich, thonfarbig oder gelblich. Geruch nicht angenehm. Stiel hoch und schlank, gebrechlich.

English translation: Odour indistinct, viscid, watery-fleshy, from the start white, clay-coloured or yellowish. Odour not pleasant. Stipe long and slender, brittle.

Commentary: From the protologue, it is not possible even to know if this is a Hebeloma.

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