Key to Psathyrella

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Used symbols: Sp. hyaline Sp. very bright Sp. moderately bright soil, litter sandy soil open habitat nerver expanding Sp. dark Sp. black L.edge white indoor in a short time after a long time L.edge coloured clamps absent CaCO3 + H20 + C + N2 + - H2O + KOH calcareous wet burned ground dung, fertilized Part A drying in KOH L.edge white, coloured underlined Pl. absent n +++ n - - - very numerous very rare 1 Cap with long brownish hairs. C. up to 55(65) mm broad. Veil absent. Stem often very long. Sp. 12-18(20) x 6,5- 9,5(10) µm, germ pore eccentric. Ch. 20-80 x 7-20 µm. Soil, leaf litter, pieces of wood. Parasola conopilus (FR.) ÖRSTADIUS & E. LARSSON (Syn.: P. conopilus (FR.: FR.) A. PERS. & DENNIS, P. arata (BERK.) W. G. SMITH, P. atrospora A. H. SM., P. circellatipes BENOIST, P. graciloides (PECK) SACC., P. circellatipes var. microspora A. H. SM., P. conopilus var. subatrata (BATSCH) CITERIN & BON) 1* Cap without hairs. 2 2 (1) Pleurocystidia present. 3 2* Pleurocystidia absent or very rarely. 9 3 (2) Cystidia strikingly with crystals and/or at least partly thickwalled. Part B 3* Cystidia without or only rarely with crystals and predominatingly thinwalled. 4 4 (3) Basidia predominantingly 2-spored. (See also P. corrugis, P. orbitarum, P. pseudogracilis) 5 4* Basidia predominantingly 4-spored. 8 5 (4) Spores up to 17(20) µm long. C. up to 25 mm broad, during drying often pinkish. Veil scanty. L.adge mostly pigmented. Spores 12-17(20) x 6-9 µm, often apically prolonged. Pl. 35-65(80) x 10-17,5(20) µm. Ch. (25)35-65(70) x 7,5-17,5 µm, clavate marginal cells near the margin of c. very numerous. Soil.
P. prona (FR.) GILLET ss. ÖRSTADIUS (Syn.: P. megaspora A. H. SM., P. subrubella A. H. SM.) 5* Spores distinctly shorter. 6 6 (5) Spores 13-15 µm long. C. 20-40 mm broad. Veil scanty. Sp. 13-15 x 7-8. Pl. 63-75 x 13-21 µm. Ch. 37-63 x 13-20(23) µm, densely packed. Cystidia often with granules. Soil, Fagus forest. P. macrocystidiata ARNOLDS 6* Spores shorter. 7 7 (6) Pleurocystidia mostly slender fusiform, never subcapitate. C. up to 11 mm broad. Veil scanty. Sp. 8-9(10) x (5)5,5-6,5 µm. Pl. 32,5-50(60) x 7,5-12,5 µm. Ch. 20-35(45) x 7,5-10(12,5) µm, often closely packed. Soil, leaf litter. P. perpusilla KITS V. WAV. 7* Pleurocystidia mostly utriform, often subcapitate. C. 3-10 mm broad. Veil scanty. Sp. (10)11-11,5(12,5) x 5,5-6,5 µm. Pl. 30-40 x 10-17,5 µm. Ch. 27,5-40 x 7,5-15 µm. Dead grass, hay, straw, dung. 2-spored form of P. romagnesii. 8 (4) Germ pore always or predominatingly distinctly visible. 8* Germ pore absent or not distinctly visible. P. romagnesii KITS V. WAV. (Syn.: P. waverenii ARNOLDS) Part C Part D 9 (2) Veil consisting of globose elements, spores punctate. C. 20-30 mm broad. Veil distinct, grey to greyish brown. Sp. 4,5-6,15(6,8) x 2,5- 3,2(3,4) µm. Ch. not differentiated or shape like basidioles. On soil in a subtropical greenhouse; Spain.
Page 1: Andreas Melzer Hauptstraße 5, 0450
Page 5 and 6: 17,5 µm. Stumps, dead wood. P. mel
Page 7 and 8: P. candolleana (FR.: FR.) MAIRE apu
Page 9 and 10: P. pennata (FR.) A. PEARSON & DENNI
Page 11 and 12: P. fimeseda ÖRSTADIUS & E. LARSSON
Page 13 and 14: P. bipellis (QUEL.) A. H. SM. (Syn.
Page 15 and 16: P. seymourensis A. H. SM. 13 (10) S
Page 17 and 18: 21* Pleurocystidia lageniform. 22 2
Page 19 and 20: P. parva A. H. SM. 6 (4) Spores str
Page 21 and 22: 14* Veil not very strongly develope
Page 23 and 24: (7,5)9-13 µm. Ch. 25-45 x 7,5-12,5
Page 25 and 26: 10* Cheilocystidia frequently, most
Page 27 and 28: P. pseudocorrugis (ROMAGN.) BON ss.
Page 29 and 30: 16 (14) Pleurocystidia with evenly
Page 31 and 32: P. orbitarum (ROMAGN.) M. M. MOSER
Page 33 and 34: P. potteri A. H. SM. (Syn.: P. arge
Page 35 and 36: P. gordonii (BERK. & BROOME) A. PEA
Page 37 and 38: 2* Spores maximally 5(5,5) µm broa
Page 39 and 40: 12* Large sphaeropedunculate margin

Key to Psathyrella

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