Key to Psathyrella
Key to Psathyrella
Key to Psathyrella
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P. pennata (FR.) A. PEARSON & DENNIS<br />
(Syn.: P. carbonicola A. H. SM.)<br />
4* Pleurocystidia utriform <strong>to</strong> lageniform. 5<br />
5 (4) Pleurocystidia mucronat, extension often bent.<br />
C. up <strong>to</strong> 35 mm broad. Veil distinct. Sp. (6,5)7-8 x 4,5-5(5,5) µm. Pl. 25-65 x 9-<br />
15 µm. Ch. 25-45 x 7,5-14 µm, often with bent extension. Soil, moss.<br />
P. umbrina KITS V. WAV.<br />
(Syn.: P. galeroides ROMAGN., P. subumbrina KITS V. WAV. & ÖRSTADIUS)<br />
5* Pleurocystiden never mucronat.<br />
C. up <strong>to</strong> 40(55) mm broad. Veil distinct. Sp. 6,5-8,5(9) x 3,5-5 µm. Pl. 40-70 x<br />
10-16 µm, very numerous. Ch. (15)22-55(60) x 7,5-17,5 µm. Soil, pieces of wood.<br />
P. cortinarioides P. D. ORTON<br />
(Syn.: P. frustulenta (FR.) A. H. SM. ss. KITS V. WAV. non ss. A. H. SM., P.<br />
multicystidiata KITS V. WAV.)<br />
6 (2) Walls of cystidia indistinctly thickened, crystals present or absent. 7<br />
6* Walls of cystidia at least partly distinctly thickened, crystals present or<br />
absent. 12<br />
7 Cystidia with many crystals.<br />
C. 5-20 mm broad. Veil scanty. Sp. 5,5-7 x 3,5-4,5 µm. Pl. 27,5-40 x 12,5-<br />
15(17,5) µm. Ch. 20-40 x 10-15(17,5) µm. Dead wood, stumps.<br />
P. pygmaea (BULL.: FR.) SING.<br />
7* Cystidia without or only with very indistinct crystals. 8<br />
8 (7) Spores up <strong>to</strong> 12,5 µm long.<br />
C. up <strong>to</strong> 25 mm broad. Veil scanty. L. broadly adnate, distant. Sp. 9,5-12,5 x 5,5-
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