Psathyrella candolleana is mushroom in the family Psathyrellaceae. It is commonly found on lawns or pastures in Europe and North America. In 2014, it was reported from Iraq. The coloring varies between white and golden brown. The cap measures 3–8 cm (1.2–3.1 in) in diameter, and is initially conical, later becoming rounded and finally with upturned margins in maturity. The cap margin is irregular and radially asymmetrical—a defining characteristic of this species. The spore print is purple-brown, while spores are smooth and elliptical, measuring 6.5–8 by 4–5 µm. The specific epithet candolleana honors French botanist Augustin Pyramus de Candolle.
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- "Psathyrella candolleana (Fr.) Maire 1913". MycoBank. International Mycological Association. Retrieved 2010-12-07.
- Al-Habib MN, Holliday JC, Tura D (2014). "The pale brittle stem mushroom, Psathyrella candolleana (higher Basidiomycetes): An indigenous medicinal mushroom new to Iraq". International Journal of Medicinal Mushrooms. 16 (6): 617–22. doi:10.1615/intjmedmushrooms.v16.i6.110. PMID 25404226.
- Huffman DM, Tiffany LH, Knaphaus G, Healy RA (2008). Mushrooms and Other Fungi of the Midcontinental United States. University of Iowa Press. p. 65. ISBN 978-1-58729-725-0.
- Evenson VS. (1997). Mushrooms of Colorado and the Southern Rocky Mountains. Big Earth Publishing. p. 136. ISBN 978-1-56579-192-3.
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