Scientific name:Lactarius alpinus Peck 1875 Synonyms:Species Fungorum 19.06.2015: Lactarius alpinus var. alpinus Peck 1875 Lactarius alpinus var. mitis Hesler & A.H. Sm. 1979 Lactifluus alpinus (Peck) Kuntze 1891 Habit of Growth:
Mushroom is not protected
Cap: 1-4 cm across, young plane convex, sometimes with a small hump, latter flattened and dented in the center, first velvety surface, later fine grained, old scaly pressed, orange yellow to orange ocher, margin first incurved, later smooth and sharp serrated.
Hymenophore: young white, later pale orange ocker, broad, decurrent, some forked.
Spore print: white
Spore: subglobose to elliptic, 7,2-10 x 6,2-8,3 μm, ornament, from multiple warts and ribs, which are almost completely net like connected.
Stem: 1,5-4 x 0,4-0,8 cm, cylindrical, full, smooth surface, pale orange yellow, with white bands.
Flesh: pale cream, orange yellow under the cup skin, when fresh without odor, later fruity odor, acrid taste. Milk: white, doesn't change color, acrid.
Habitat: solitary to gregaroius by alder, montane to alpine. Rare. Summer-fall.
Remarks: similar with Lactarius salicis-herbaceae, which growths on the alpine pastures, and has milk that changes in few minutes in violett color.
Lactarius alpinus var. mitis: cup (3-6 cm), pale pink cinnamon, Stem (3-5 x 1-1,5 cm), Spore: (7,5-9 x 6-7,5 μm)