Vinegar Brittlegill Scientific name:Russula acetolens Rauschert 1989 Synonyms:Species Fungorum 19.11.2015: Habit of Growth:
Mushroom is not protected Trees: Betula (Birch)d0d0d0
, Corylus (Hazel)d1d1d1
Cap: 2,5-5 cm across, young flat convex, later flat spread to wavy bent, in center dented, smooth, in dry satin shiny, in wet shiny and greasy, cream to lemon yellow, center yolk yellow, margin is smooth, later weak ribbed striate, cup skin peelable almost completely.
Hymenophore: first white, later ocher to yolk yellow, narrow, many forked, edges smooth to weak crenate and white.
Spore print: yellow, IVd
Spore: subglobose to elliptic, 6,3-8,7 x 5,3-7,3 μm, ornament, from many warts which are partially and unclear veind connected to each other.
Stem: 2-5 x 0,6-1,2 cm, cylindrical, first full, soon hollow or chambered, longitudinally varicose, white.
Flesh: white, first no odor, later sour, like-vinegar, taste mild. Chemical reactions on cup flesh: FeSO4- gently pink, Guaiac- gently gray green, Phenol- gently wine red.
Habitat: gregarious in hardwood and coniferous forests, in parks, especially by beech and pine, on weak alkaline to weak acidic soils, rare, grows from summer to fall.