Postia ptychogaster (F. Ludw.) Vesterh., in Knudsen & Hansen, Nordic Jl Bot. 16(2): 213 (1996) Polyporus destructor sensu Smith (1908) Ptychogaster albus Corda, Icon. fung. (Prague) 2: 24, fig. 90 (1838) Polyporus ptychogaster F. Ludw., Z. gesammt. Naturw. 3: 424 (1880) Oligoporus ptychogaster (F. Ludw.) Falck & O. Falck, in Ludwig, Z. gesammt. Naturw. 3: 424 (1880) Ceriomyces albus (Corda) Sacc., Syll. fung. (Abellini) 6: 388 (1888) Ceriomyces richonii Sacc., Syll. fung. (Abellini) 6: 388 (1888) Tyromyces ptychogaster (F. Ludw.) Donk, Meddn Bot. Mus. Herb. Rijhs Universit. Utrecht. 9: 153 (1933) Ptychogaster fuliginoides (Pers. ex Steud.) Donk, Proc. K. Ned. Akad. Wet. Ser. C, Biol. Med. Sci. 75(3): 170 (1972)
Habitat: Weakly parasitic or saprotrophic. On decayed wood of conifers such as Chamaecyparis lawsoniana, Picea and Pinus spp., usually on decayed stumps. Occasionally clustered around the stems and roots of living Calluna on heathland or moorland.
Notes: The anamorph (Ptychogaster albus) is not infrequent, but the poroid teleomorph (formed on the underside of the anamorph) is more rarely seen.
Distribution: E: !, S: !, W: !, ROI: !, Other: Isle of Man: !
Vouchers: England: K(M) 20514; Scotland: K(M) 24268
Descriptions, Lists & Icons: D:, in Hansen, I. & Knudsen, H., Nordic Macromycetes Heterobasidioid, Aphyllophoroid and Gasteromycetoid Basidiomycetes, (Ed.: Lise Hansen & Henning Knudsen) 3: 444 pp. (1997), p. 235
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