Checklist of the British & Irish Basidiomycota

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Hohenbuehelia petaloides (Bull.) Schulzer, Verh. zool.-bot. Ges. Wien 16: 45 (1866)

Agaricus petaloides Bull., Herb. Fr. (Paris) 5: tab. 226 (1785)
Agaricus geogenius DC., in Fries, Epicr. syst. mycol. (Uppsala): 134 (1838) [1836-1838]
Pleurotus petaloides (Bull.) Quél., Mém. Soc. Émul. Montbéliard Sér. 2 5: 226 (1872)
Pleurotus geogenius (DC.) Gillet, Hyménomycètes (Alençon): 339 (1876) [1878]
Geopetalum geogenium (DC.) Pat., Hyménomyc. Eur. (Paris): 127 (1887)
Acanthocystis geogenius (DC.) Kühner, Botaniste 17: 111 (1926)
Pleurotus petaloides var. geogenius (DC.) Pilát, Atlas Champ. l'Europe (Praha) 2: 91 (1935)
Hohenbuehelia geogenia (DC.) Singer, Lilloa 22: 255 (1951) [1949]
Geopetalum geogenium var. queletii Kühner, in Kühner & Romagnesi, Bull. Soc. nat. Oyonnax 8: 74 (1954)

Habitat: On soil, typically with deciduous trees, usually Fagus and rarely Betula spp. Also reported from dunes with Pinus spp. and in greenhouses on potting compost.

Notes: This is a large and distinctive species, most often collected in south-eastern England where it may occasionally be abundant in beechwoods on calcareous soil. N.B. This is not H. petaloides of NCL or BFF8, for which see H. auriscalpium.

Distribution: E: !, S: !, W: !

Vouchers: England: K(M) 59294; Scotland: K(M) 40155; Wales: K(M) 34287

Descriptions, Lists & Icons:
D+I:, in Breitenbach, J., Kränzlin, F., Fungi of Switzerland Boletes and agarics (1st part) 3: 361 pp. (1991), as Hohenbuehelia geogenia, p. 198, pl. 223
D:, in Hansen, I. & Knudsen, H., Nordic Macromycetes Polyporales, Boletales, Agaricales, Russulales. 2: 474 pp. (1992), p. 127
D:, in Hansen, I. & Knudsen, H., Nordic Macromycetes Polyporales, Boletales, Agaricales, Russulales. 2: 474 pp. (1992), as Hohenbuehelia geogenia, p. 127
I:, in Courtecuisse. R. & Duhem. B., Mushrooms and Toadstools of Britain & Europe: 480 pp. (1995), as Hohenbuehelia geogenia, p. 153
D:, in Watling, R. & Gregory, N.M., British Fungus Flora. Agarics and Boleti: 6 Crepidotaceae, Pleurotaceae and other pleurotoid agarics 6: 157 pp. (1989), as Hohenbuehelia geogenia, p. 40
D:, in anon., Flora Agaricina Neerlandica 3: Critical Monographs of Families of Agarics and Boleti occuring in the Netherlands Tricholomataceae (2), (Ed.: C.Bas, Th.W. Kuyper, M.E. Noordeloos & E.C. Vellinga) 3: 183 pp. (1995), p. 159-160
I:, in Krieglsteiner, G.J., Die Grosspilze Baden-Würtenbergs - Band 3 3: 634 pp. (2001), p. 264

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