Psathyrella cotonea (Quél.) Konr. & Maubl. 1948
in Encycl. mycol. 14 (Agaricales 1): 126

MycoBank: 304283
Basionym: Stropharia cotonea Quél. 1877 in Bull. soc. bot. Fr. 23: 328

Original diagnosis:

"Stipe courbe, fistulex, floconneux-écailleux, blanc. Chapeau sphérique puis convexe (0m,05-0,07), charnu, peluché laineux, blanc de neige (roussissant légèrement au sommet). Lamelles sinuées-adnées, blanches puis purpurines, et enfin brun pourpre foncé, avec l'arête blanche. Spore (0mm,01) elliptique, bistre pourpré. (P. II, fig. 5.)
Été-automne. - Cespiteux dans led bruyères et les bois de Conifères des terrains siliceux."

Type: Quél. l. c. plate 2 fig. 5


Important synonyms:
Agaricus cotoneus (Quél.) Cooke & Quél. 1878 in Clav. syn. Hymenomyc. eur.: 92
Geophila cotonea (Quél.) Quél. 1886 in Enchir. fung.: 112
Hypholoma cotoneum (Quél.) J. E. Lange 1923 in Dansk bot. Ark. 4(4): 41
Drosophila cotonea (Quél.) Kühner & Romagn. 1953 in Fl. anal. Champ. sup.: 370
Agaricus storea var. caespitosus Cooke 1887 in Handb. Brit. Fungi, 2. ed.: 204
Hypholoma storea var. caespitosum (Cooke) Killerm. 1936 in Denkschr. Regensb. bot. Ges. 20: 64
Agaricus pseudostorea W.G. Sm. 1903 in J. Bot. 41: 386
Hypholoma pseudostorea (W.G. Sm.) Sacc. & D. Sacc. 1905 in Syll. fung. 17: 89
Hypholoma aggregatum Peck 1893 in Rep. N. Y. State Mus. 46: 106
Agaricus hypoxanthus W. Phillips & Plowr. 1884 in Grevillea 13(66): 48
Hypholoma hypoxanthum (W. Phillips & Plowr.) Sacc. 1887 in Syll. fung. 5: 1037
Psathyrella alboalutacea A. H. Sm. 1950 in Mycologica 42: 118f.
Psathyrella duchesnayensis A. H. Sm. 1972 in Mem. N. Y. bot. Gdn. 24: 57
Psathyrella olivaceopallida A. H. Sm. 1972 in Mem. N. Y. bot. Gdn. 24: 92
Psathyrella insignis A. H. Sm. 1946 in Jour. Elisha Mitchell Soc. 62: 183
Psathyrella subvolvata A. H. Sm. & Hesler 1946 in Jour. Elisha Mitchell Soc. 62: 187
Misappl.:
Hypholoma scobinaceum (Fr.) Ricken ss. J. Favre
Hypholoma lacrymabunda ss. Rea 1922 in Brit. Basidiomyc.: 264
Psathyrella lacrymabunda (Fr.) M. M. Moser ss. M. M. Moser 1953 in Gams, Kl. Kryptog.fl. 2, 1. ed.: 204
Psathyrella lacrymabunda (Fr.) M. M. Moser ss. A. H. Sm. 1971 in Mem. N. Y. bot. Gdn. 24: 53
Psathyrella lacrymabunda (Fr.) M. M. Moser ss. Singer
Hypholoma cascum ss. Ricken 1912 in Blätterpilze: 256, pl. 64 fig. 1 (see right)

Select. descript.: Breitenbach & Kränzlin (1995): 266, Consiglio (2005): 18f., Garnweidner (1998): 7f., Gerhardt (2002): 224, Kits v. Wav. (1985): 127ff., Lange (1939): 76 (as Hypholoma cotoneum), Ludwig (2007): 588f., Michael & al. (1981): 436, Muñoz & Caballero (2012): 43ff., Örstadius & Knudsen (2008): 611f., Romagnesi (1982): 58ff., Smith (1972): 53ff. (as Psathyrella lacrymabunda), 55f. (as P. alboalutocea), 57f. (asP. duchesnayensis), 58f. (as P. insignis), 59 (as P. subvolvata), 92 (as P. olivaceopallida), Smith & Stuntz (1950): 118ff. (as P. alboluteacea)
Select. icons: Breitenbach & Kränzlin (1995): 267, Consiglio (2005): 18, Fournier & Fouchier (2000): 6, Gerhardt (1998): 363, Gerhardt (2002): 224, Iglesias & al. (2015): 190, Krieglsteiner & Gminder (2010): 615, Lange (1939): plate 146 fig. C (as Hypholoma cotoneum), Laux (2004): 303, Ludwig (2007a): 175, Michael & al. (1981): 437, Montag (2012): Porträt 144, Muñoz & Caballero (2012): 44

Macrocharacters:
Pileus 20-100 mm wide, convex, old flattened, whitish, greyish to light brown, unstriated, not hygrophan, with whitish to grey, old blackish scales. Veil strongly developed, on the margin persistent for a long time, young white.
Lamellae close, narowly adnate, rather pale grey brown, edge white.
Stipe 30-135 x 3-12 mm, whitish to grey, scaly, often with yellow or reddish base.
Spore print dark red brown.
Microcharacters:
Spores 6-9 x 3-4,5 µm, av. 6,8-7,9 x 3,8-4,4 µm, av. Q=1,70-2,05, ellipsoid to slender ellipsoid, ovoid, often constricted, base flattened, in side view phaseoliform, germ pore small. In water and ammonia relativly pale brown, in KOH pale grey brown, mostly with large oil drops, not opaque.
Basidia 15-32 x 6,5-9 µm, 4-spored.
Cheilocystidia 25-65 x 6-15 µm, numerous, sometimes crowded, but also incomplete. Sphaeropedunculate and clavate marginal cells rare, up to 27 x 12 µm.
Pleurocystidia 25-63 x 8,2-17,5 µm, very numerous.
Clamps present.
Habitat: Dead wood, especially beech, birch and spruce in forests, rare in the lowlands.
Distribution: Austria (Krisai-Greilhuber & al. 2011), Czech Republic, Denmark, Germany, France, Italy, Norway, Spain, Sweden, Switzerland, Turkey (Kaya 2010), USA
Remarks:
The species is found mainly in the mountains and grows on deciduous and coniferous wood.
Smith (1972) mentioned for Psathyrella insignis pink hues in older caps.
Coll. exam.:
(G) Hamburg: 28.10.07, leg. M. Vega (AM1070).
Historical documents:
Cooke & Quélei (1878):

W. Phillips & Plowr. (1884):

Quélet (1886):

Cooke (1887):

Saccardo (1887):

Quélet (1888):

Bigeard (1898):

Saccardo & D. Saccardo (1905):

Bigeard & Guillemin (1909):

Lange (1939):

Lange (1939):


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