High Quality Content by WIKIPEDIA articles Lactarius indigo, commonly known as the indigo milk cap, the indigo (or blue) Lactarius, or the blue milk mushroom, is a species of fungus in the Russulaceae family of mushrooms. A widely distributed species, it grows naturally in eastern North America, East Asia, and Central America; it has also been reported from southern France. L. indigo grows on the ground in both deciduous and coniferous forests, where it forms mycorrhizal associations with a broad range of trees. The fruit body color ranges from dark blue in fresh specimens to pale blue-gray in older ones. The milk, or latex, that oozes when the mushroom tissue is cut or broken-a feature common to all members of the Lactarius genus-is also indigo blue, but slowly turns green upon exposure to air. The cap is typically between 5 to 15 cm (2 to 6 in) broad, and the stem 2 to 8 cm (0.8 to 3.1 in) tall by 1 to 2.5 cm (0.4 to 1.0 in) thick. It is an edible mushroom, and is sold in rural markets in Mexico, Guatemala, and China.
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