B. Papp szerk.: Studia Botanica Hungarica 36. 2005 (Budapest, 2005)

Siller, Irén, Vasas, Gizella , Pál-Fám, Ferenc , Bratek, Zoltán , Zagyva, Imre; Fodor, Lívia: Hungarian distribution of the legally protected macrofungi species

Elaphomyces mutabilis Vittad. (Elaphomycetales, Elaphomycetaceae) Fruit-body: subglobose, up to hazelnut size, bluish black, wrapping whitish mycelial crust, with a soft cortex, becoming wrinkled after drying. Gieba: bluish grey-black, at maturity consisting of powdery mass of spores. Spore: globose, very small (7-15 ëm), brownish when mature, ornamented with small, dense rods. Life-strategy: mycorrhiza. Occurrences in Hungary, habitats: only one reported habitat, in deciduous wood. Distribution, frequency: Known from Italy, France, Germany, Hungary and China. Hungarian red list category: 1. Justification: Very rare in Hungary and in Europe. Macroscopically easy to confuse with other rare black Elaphomyces species. Known Hungarian records: SZEMÉRE (1965): Bize (sub Quercus cerris). Elaphomyces persooni Vittad. (Elaphomycetales, Elaphomycetaceae) Fruit-body: globose-subglobose, 1-2 cm diam., hard and fragile, uniformly brown black, peridial surface ornamented with small Verrucae. Gieba: when mature light leaden grey, bluish grey, consisting of powdery mass of spores. Spore: globose, hazel to sepia coloured, ornamented with a reticulum of polygonal meshes, numbering 6-8 along a diameter. Life-strategy: mycorrhiza. Occurrences in Hungary, habitats: Reported from a single site. Distribution, frequency: Occurs only in Italy and Hungary. Rather rare species in deciduous or coniferous woods, in various seasons (MONTECCHI and SARASINI 2000). Hungarian red list category: 1. Justification: With only one record of this truffle from Hungary. This species is truly rare as well as being challenging to find. Macroscopically not easy to distinguish from other rare, black Elaphomyces species. Known Hungarian records: BRATEK et ai (1992, 1999): Bakony: Uzsapuszta (Carpino-Quercetum, sub Fagus sylvatica).