Psathyrella spadicea, commonly known as the chestnut brittlestem, is a species of agaric fungus in the family Psathyrellaceae. The fungus was originally described by German mycologist Jacob Christian Schäffer in 1783 as Agaricus spadiceus. Rolf Singer transferred it to the genus Psathyrella in 1951, in which it is classified in the section Spadiceae. The mushroom is edible.
Psathyrella spadicea is found in Europe and North America. In North America, it is more common in northern regions, including Alaska and the Yukon Territories, than further south. Fruitbodies produce reddish to red-brown spore prints.
- "Recommended English Names for Fungi in the UK" (PDF). British Mycological Society. Archived from the original (PDF) on 2011-07-16.
- Vašutová M. (2008). "Taxonomic studies on Psathyrella sect. Spadiceae" (PDF). Czech Mycology. 60 (2): 137–71.
- Boa ER. (2004). Wild Edible Fungi: A Global Overview of Their Use and Importance to People. Food & Agriculture Organization. p. 138. ISBN 978-92-5-105157-3.
- Miller OK, Miller H. (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Falcon Guide. p. 239. ISBN 978-0-7627-3109-1.
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