[1] It typically grows in association with pine trees.

[2] It is primarily found on the Pacific coast of western North America, although mushrooms with 97 percent genetic similarity are known from Asia.

[3]: 79  This species was formerly considered to be Russula sanguinaria, from which it has been recently separated due to differences in genetics and geographic distribution.

[3]: 79  It has an extremely acrid taste when raw,[3]: 78  and is described as having a "disgusting" flavor when cooked.

This Russulales-related article is a stub.