Psathyrella candolleana

The ‘suburban Psathyrella’, Psathyrella candolleana (Fr.) Maire.

Synonyms

Agaricus appendiculatus Bull.
  Herbier de la France 9: tab. 392 (1789)
Agaricus appendiculatus var. lanatus Berk. & Broome
  Ann. Mag. nat. Hist., Ser. 5 7 (1881)
Agaricus candolleanus Fr.
  Observ. mycol. (Havniae) 2: 182 (1818)
Agaricus catarius Fr.
  Hymenomyc. eur. (Upsaliae): 296 (1874)
Agaricus egenulus Berk. & Broome
  Ann. Mag. nat. Hist., Ser. 3 7: 375 (1861)
Agaricus felinus Pass.
  Nuovo Giorn. Bot. Ital. 4: 82 (1872)
Drosophila candolleana (Fr.) Quél.
  Enchir. fung. (Paris): 115 (1886)
Hypholoma appendiculatum (Bull.) Quél.
  Mém. Soc. Émul. Montbéliard, Sér. 2 5: 146 (1872)
Hypholoma candolleanum (Fr.) Quél.
  Mém. Soc. Émul. Montbéliard, Sér. 2 5: 146 (1872)
Hypholoma catarium (Fr.) Massee
  Brit. Fung.-Fl. 1: 393 (1892)
Hypholoma egenulum (Berk. & Broome) Sacc.
  Syll. fung. (Abellini) 5: 1040 (1887)
Hypholoma felinum Pass.
  Syll. fung. (Abellini) 5: 1040 (1887)
Hypholomopsis appendiculata (Bull.) Earle
  Bulletin of the New York Botanical Garden 5: 436 (1909) [1906]
Psathyra appendiculata (Bull.) G. Bertrand
  Bull. Soc. mycol. Fr. 17: 278 (1901)
Psathyra candolleana (Fr.) G. Bertrand
  Bull. Soc. mycol. Fr. 17: 278 (1901)
Psathyrella appendiculata (Bull.) Maire & Werner
  Mém. Soc. Sci. Nat. Maroc. 45: 112 (1938)
Psathyrella egenula (Berk. & Broome) M.M. Moser
  Kleine Kryptogamenflora, Edn 1: 206 (1953)
Psathyrella microlepidota P.D. Orton
  Trans. Br. mycol. Soc. 43: 375 (1960)

Common names

Suburban Psathyrella
Common Psathyrella
Fringed crumblecap
Pale brittlestem
Psathyrelle de De Candolle (French)
Bleke franjehoed (Dutch)

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Description

Cap: 2-7 cm diameter, convex, broadly convex in age, white to light brown (cap color can be highly variable), initially with scattered small white scales, margin when young with hanging veil remnants; flesh thin, fragile, white.
Gills: adnate or seceding, close to crowded, initially whitish, later grayish or grayish purple, finally dark brown; abundant lamellulae.
Stem: 4-10 cm long, 2-7 mm thick, equal, hollow, fragile, white or very pale brown, often silky or scurfy.
Partial veil: membranous, white, rarely leaving ring.
Odor: ‘mushroomy’.
Taste: not distinctive.
Spores: 7-10 x 4-5 µm, ellipsoid to ovoid, smooth, with an apical germ pore, nonamyloid.
Spore print: dark brown or purple-brown.
Habitat: scattered or gregarious in lawns, gardens on or around old hardwood stumps, on buried roots or debris; widely distributed and very common in urban and suburban settings; late spring-early autumn.
Edibility: edible.

Medicinal properties
Antitumor effects

Polysaccharides extracted from the mycelial culture of P. candolleana and administered intraperitoneally into white mice at a dosage of 300 mg/kg inhibited the growth of Sarcoma 180 and Ehrlich solid cancers by 70% and 80%, respectively (Ohtsuka et al., 1973).

Antibacterial effects

P. candolleana was shown to have antibacterial activity against various Gram+ bacteria (Bacillus cereus, Bacillus subtilis, Staphylococcus aureus, Salmonella typhimurium and Candida albicans) (Colletto et al., 1999).


Links

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References

Coletto B, Ausilia M, Lelli P.
Antibiotic activity in Basidiomycetes. XII. Antibacterial and antifungal activity of 32 new strains.
Allionia (Turin). 1999 36:89-92.

Galland MC, Kemp RFO, Jurand MK.
Species problem in the Psathyrella candolleana complex.
Mycotaxon. 1979 8(2):329-32.

Ohtsuka S, Ueno S, Yoshikumi C, Hirose F, Ohmura Y, Wada T, Fujii T, Takahashi E.
Polysaccharides having an anticarcinogenic effect and a method of producing them from species of Basidiomycetes.
UK Patent 1331513, 26 September 1973.

Prostenik M, Burcar I, Castek A, Cosovic C, Golem J, Jandric Z, Kljaic K; Ondrusek V.
Lipids of higher fungi. Part 3. The fatty acid and 2-hydroxy fatty acids in some species of basidiomycetes.
Chemistry and Physics of Lipids. 1978 22(2):97-104.

Riedl H.
Remarks on Psathyrella candolleana.
[Bemerkungen uber Psathyrella candolleana (Fr.) Maire in Maire et Werner]
Osterr Bot Z. 1965 112(1/5):94-100.

Vanwaveren EK.
Checklist of synonyms, varieties and forms of Psathyrella Candolleana.
Trans Brit Mycol Soc. 1980   75(DEC):429-37.

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