Image of Rusty Porecrust

Description:

Slo.: rjasti pluta - syn.: Phellinus ferruginosus, Polyporus ferruginosus - Habitat: Trees overgrown former grassland; dominant species Ailanthus altissima, Fraxinus ornus, Corylus avellana, Fagus sylvatica, Juglans regia, Tilia sp., Prunus domestica; next to an abandoned farmhouse; flat terrain, calcareous ground; full shade, quite humid and relatively warm place, partly protected from direct rain by tree canopies; average precipitation ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 590 m (1.950 feet), alpine phytogeographical region. - Substratum: vertical surface of dead, still standing trunk of Juglans regia partly still in bark. - Comments: Fungus growing on either side of partly peeling off bark of the tree, as well as on already decorticated surface of the trunk (less intensive); fungus was spreading on almost 2 m (7 feet) of the trunk height and in some places all around it. Trunk diameter about 50-60 cm; trama corky; smell indistinctive on rooting wood or earth; 5% KOH reaction on pore and sterile surfaces black; SP very faint, possibly whitish ? - Spores smooth. Dimensions: 5.5 (SD = 0.2) x 3.5 (SD = 0.2) , Q = 1.56 (SD = 0.08), n = 30. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil. Hymenial setae dimensions 43 (SD = 6.4) x 7.8 (SD = 0.7) , n = 29; generative hypha diameter 2.4 (SD = 0.2) , n = 6; skeletal hyphae diameter: 3.6 (SD = 0.6) , n = 6; setal hypha diameter 8.6 (SD = 0.7) , n = 6; NEA 40x/0.65, magnification 400x, in water, congo red. AmScope MA500 digital camera. - Picture captions: _1M Spores. _2M Spores' statistics and comparison with data from literature. _3M Mostly subulate hymenial setae. _4M Probably a piece of setal hypha. _5M Hyphal system (as far as my understanding allows). Green arrow - generative hypha, violet arrow - skeletal hypha and red arrow - a fraction of setal hyphae. _6M Pore transversal cross-section with abundant hymenial setae projecting well above hymenium. _7M Hymenial setae length statistic and comparison with data from literature. - Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJF - Ref.: (1) L. Ryvarden, R.L. Gilbertson, European Polypores, part 2., Synopsis Fungorum 7., Fungiflora A/S (1994), p 486. (2) A. Bernicchia, Polyporaceae s.l., Fungi Europaei, Vol. 10., Edizioni Candusso (2005), p 407. (3) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 5., Ulmer (2000), p 451. (4) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.2. Verlag Mykologia (1984), p258. (5) Lowe, J.L. 1966. Polyporaceae of North America. The genus Poria. State University College of Forestry at Syracuse University. 90:1-183, available at www.mycobank.org.