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MycoBank: no number Basionym: Agaricus melanthinus Fr. 1851 in Öfv. K. Vet.-Akad. Förh. 18: 49 Original diagnosis: |
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"A. (Hypholoma) melantinus, pileo carnoso-membranaceo e campanulato expanso obtuso umbrino expallente, squamulis innatis pilosis nigris variegato, margine fimbriato, stipite fistuloso adpresse nigro-fibrilloso, lamellis adnexis ventricosis confertis e pallido umbrinis. Ad truncos vetustos cariosos Betulae, vulgo solitarius, Fredrikslund, quotannis redux. Est e priorum stirpe, licet tenitate et velo obsoleto, in margine pilei junioris fibrillosso-appendiculato, primo obtuta pro Psathyre potius sumeres. Stipes 2 unc. Longus, 1-2 lin. Crassus, aequalis i. sursum leviter attenuatus, subcurvatus, sat tenax, fibrillis nigricantibus hispidulus, apice nudus (nec albo pulverulentus). Pileus tenuis, 1-2 unc. Latus, hygrophanus, squamulis pilosis nigris adpressis eleganter variegatus ; non fragilis." |
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Important synonyms: Geophila melanthinum (Fr.) Quél. 1886 in Enchir. fung.: 113 Hypholoma melanthinum (Fr.) P. Karst. 1879 in Bidr. Känn. Finl. Nat. Folk 32: 500 Drosophila melanthina (Fr.) Kühn. & Romagn. 1953 Fl. anal. Champ. sup.: 369 (inval.) Psathyrella melanthina (Fr.) M. M. Moser 1953 in Gams, Kl. Krypt.fl. 2, 1. ed.: 204 (inval.) Psathyrella melanthina (Fr.) Romagn. 1982 in Bull. trimest. Soc. mycol. Fr. 98: 50 (inval.) Psathyrella melanthina (Fr.) Romagn. ex Kits v. Wav. 1985 in Persoonia Suppl. vol. 2: 281 Hypholoma agaves Maire 1928 in Bull. Soc. Mycol. Fr. 44: 50 Psathyra agaves (Maire) Singer 1947 in Collectanea Botanica 1(3): 230 Psathyrella agaves (Maire) Konrad & Maubl. 1948 in Encycl. Mycol. 14: 128 Psathyrella agaves (Maire) Konrad & Maubl. 1948 in Encycl. Mycol. 14: 128 Select. descript.: Babos & Szücs (1979): 15f. (as Psathyrella melanthina), Bon (1974): 21f. (as P. melanthina), Camboni & Migliozzi (2003): 13ff. (as P. melanthina), Kits v. Wav. (1985): 117f. (as P. melanthina), Krieglsteiner & Gminder (2010): 625 (as P. melanthina), Lamoure (1978): 9f. (as P. melanthina), Larue (2011): 8f. (as P. melanthina), Larue (2011b): 7ff. (as P. melanthina), Ludwig (2007): 592f. (as P. melanthina), Mifsud (2017): 23f. (as P. melanthina), Muñoz & Caballero (2012): 49ff. (as P. melanthina), Romagnesi (1982): 50ff. (as P. melanthina), Tassi (2000): 348ff. (as P. melanthina) Select. icons: Camboni & Migliozzi (2003): 13 + 14 (as P. melanthina), Dähnke (2004): 575 (as P. melanthina), Fournier & Fouchier (2000): 44 (as P. melanthina), Krieglsteiner & Gminder (2010): 625 (as P. melanthina), Larue (2011): 7+8 (as P. melanthina), Larue (2011b): 7 (as P. melanthina), Ludwig (2007a): 176 (as P. melanthina), Muñoz & Caballero (2012): 48 (as P. melanthina), Tassi (2000): plate 3 (as P. melanthina) |
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Macrocharacters: Pileus: 25-80 mm broad, young hemispherical, rapidely flattend, often with umbo, grey brown, not or only short striated, scarcely hygrophanous, with brown or blackish brown scales. Lamellae: moderately close, nearly free, pale brown, edge white. Stipe: 20-90 x 2,5-12 mm, whitish, apex pruinose, below strongly brownish flocculose, sometimes with an annular zone. Spore: Print reddish brown. |
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Microcharacters: Spores: (8-) 9-12,5 (-13,7) x (5,2-) 5,5-7 µm, av. 10,5-10,9 x 5-8-5,9 µm, av. Q=1,80-1,85, ellipsoid to ovoid, germ pore absent. In water, ammonia and KOH extremely pale yellowish, nearly colourless. Basidia: 8,5-25 (-30) x 5-10 µm, 4-spored. Cheilocystidia: 30-50 (-60) x 12,5-27 µm, numerous to moderately numerous. Clavate marginal cells: 22-25 x 15-18 µm, rare to numerous. Pleurocystidia: Absent. Clamps: Present. |
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Habitat: especially in riverine forests, terrestrial or on wood Distribution: Algeria, Austria, France, Germany, Hungary, Italy, Malta, Spain, Sweden Remarks: Hypholoma melanthinum ss. Ricken 1913: 245 = ? Hypholoma melanthinum ss. J. E. Lange 1939 in Fl. Agar. Dan. 4: 75, pl. 146 = Psathyrella maculata Coll. exam.: (A) Wien, 07.06.16, leg. R. Brandstätter (AM1821); - Malta: Buskett, Siggiewi, 16.12.09, le. C. Sammut (AM1521). Historical documents: |
Fries (1851, Orig.diag.): Fries (1857):  Fries (1874):  |
Fries (1879):  Fries (1857): Saccardo (1887):  |