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Description type:Latin diagnosis 
Description:Pileus 7-11 mm latus, hemisphaericus, disco griseofuligginoso, parvo umbone atro praeditus. Lamellae 18-22, albogriseae, acie alba, parvo dente decurrentes. Caro grisea, sapore et odore nullis. Stipes 40-50 mm longus, 0,5-1,5 mm crassus, cavus, nitens, fragilis, albogriseus, aquosus. Habitatio supra Ulmi radicem, pluribus speciminibus fasciculatis. Sporae (4,5) 5-6 x (6,5) 7,5-8,5 µm, ellipsoideae, amyloideae. Basidia 7-8,5 x 24-26 µm, tetrasporigera. Cheilocystidia 3-5 x 30-55 µm, flexuosa, undulata, nodulosa. Epicutis ex hyphis 1,5-6 µm latis, tumoribus haud densis tenui glutinis strato obtectis, constituta. Stipitis externae hyphae 1-2,5 µm latae, laeves. Caulocystidia 2-4 x 25-60 µm, flexuosa, curva, laevia, elongata-irregularia tumoribus praedita. Holotypus MCVE 903 (now MCVE 20144). Leg. G. Robich, 28.09.2000. Loc. Molino, Valle della Motta, Novazzano (CH). 
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