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

Private collection of I. Iváncsik: Újszász: Szőrös-erdő, sub: Populus canescens (IVÁNCSIK 1994). Cortinarius praestans (Cordier) Gillet (Agaricales, Cortinariaceae) (Syn.: Cortinarius variecolor (Pers.) Fr. var. herculeanus Fr.) Cap: 10-20 cm in diameter, pale reddish brown, violet-chocolate brown, covered by violet universal veil when young, it remains as dots when old. Gills: decurrent with tooth; violet-grey when young, later rusty clay-brown, their edges with fine teeth. Stem: 10-25 cm long, 2-3 cm thick, slightly clavate at its base, with violet tint at the top, later whitish, ochraceous. The spider's web-like partial veil is well developed, pale violet, later tearing away from the cap margin and may be left as rings on the stem. Flesh: thick, dense, whitish, pale violet at the top of the stem, its scent slightly reminiscent of Boletus, taste is mild. Life-strategy: mycorrhiza. Occurrences in Hungary, habitats: August-October, in deciduous forest of calcareous, acidic soil (mainly under Fagus, then Tilia, Corylus). Distribution, frequency: Known from Europe and Asia (BREITENBACH and KRÄNZLIN 2000). Rare all over Europe, also in Hungary. Hungarian red list category: 3. Justification in Hungarian and at international level: Highly endangered because of its striking large size, edible feature and declining habitats. The habitat being old-growth deciduous forests of acidic soil; such forests are disappearing as a result of commercial forestry practices (e.g. logging). Known Hungarian records: BABOS (1989): Mátra: Mátraháza (QuercoCarpinetum), Bakony: Bakony gyepes (in Querco-Carpinetum). RIMOCZI (1994): Mátra: Parádsasvár (Deschampsio-Fagetum subcarpaticiim), Bakony: Devecser, Széki-erdő (Querco petraeae-Carpinetum pannonicum). RIMOCZI et al, (1997): Nyírség: Bátorliget. BP: Mátra: near "Pisztrángos-tó'' (Deschampsio flexuosaeFagetum subcarpaticum). Private collection of Albert, Dima and Németh: Mátra: near "Pisztrángos-tó".