Image of Postia caesia (Schrad.) P. Karst. 1881

Description:

Slo.: modri skutovec - syn.: Oligoporus caesius (Schrad.: Fr.) Gilbn.& Ryv., Tyromyces caesius (Schrad.: Fr.) Murr. - Habitat: on a large pile of Picea abies cut off trunks and thrown away rotten timber; in light mixed wood, Picea abies, Ostrya carpinifolia and Fagus sylvatica dominant trees; slightly inclined mountain slope, south aspect; calcareous, skeletal ground; in shade; moderately dry and relatively warm place; partly protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 595 m (1.950 feet), alpine phytogeographical region. - Substratum: on a cut-off surface of a dead trunk of Picea abies; partly debarked; in late initial stage of disintegration. - Comments: Growing in two small groups of partly fuzzed pilei; the largest pileus dimensions 4.8 x 2.5 cm, tube layer up to 5 mm thick; trama up to 3 mm thick; smell mild, mushroomy; taste mild, mushroomy, after some time slightly unpleasant; flesh soft; 5% KOH on pore layer gray-blue-green, on hut surface gray-green; SP abundant, whitish-grayish with a blue tint, oac305. - Spores smooth, cylindrical and allantoid. 4,7 [5,2 ; 5,4] 5,9 x 1,4 [1,6 ; 1,7] 2 microns; Q = 2,5 [3,1 ; 3,3] 3,8; N = 35; C = 95%; Me = 5,3 x 1,7 microns; Qe = 3,2. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water. AmScope MA500 digital camera. - Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJF - Ref.: (1) A.Bernicchia, Polyporaceaes.l., Fungi Europaei Vol.10., Edizioni Candusso (2005), p 332. (2) S. Buczacki, Collins Fungi Guide, Collins (2012), p 490. (3) M. Bon, Parey's Buch der Pilze, Kosmos (2005), p 316. (4) R. Phillips, Mushrooms, Macmillan (2006), p 313. (5) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 1, Ulmer (2000), p 548. (6) L. Ryvarden, R.L. Gilbertson, European Polypores, part 2., Synopsis Fungorum 7., Fungiflora A/S (1994), p 435.