Lactarius mammosus is a largish agaric that has a grey cap and pale gills and stem and exudes white milk. It grows solitary or in scattered groups on boggy soil under coniferous trees, mainly pine.
convex, later flattening or with a depression, sometimes with a fiat to pointed umbo, margin at first somewhat inrolled; brownish, vinaceous-grey to umber or hazel, sometimes with one or more concentric bands; moderately thick, firm, surface dry, of feathery, adpressed fibres breaking into small, low, fibrous scales. Gills
adnate to slightly decurrent, crowded; rosy buff, later darker with an orange tinge. Milk white; taste mild, then hot or very hot, the smell of coconut.Spores
Spore print cream. Flesh
whitish to buff. Stem
whitish or tinged with the cap colour, bruising pale cinnamon-brown. It has no ring.
include Lactarius rufus
which has more brown color and Lactarius helvus
which exudes transparent milk.