Mushrooms of the Northwest: A Simple Guide to Common Mushrooms (Mushroom Guides) [Idioma Inglés] - Tapa blanda

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Teresa Marrone is the lead author of three regional field identification guides for wild mushrooms (Mushrooms of the Upper Midwest, Mushrooms of the Northeast, and Mushrooms of the Northwest). She is also sole author of more than a dozen outdoors-themed books, including the Wild Berries & Fruits Identification Guides series (currently available for four regions of the U.S.). She splits her time between her home in Minneapolis and her cabin in northern Minnesota, abutting the Boundary Waters Canoe Area Wilderness. With a background in the visual arts, Drew Parker has always had a strong attraction to the natural sciences, as well. He found his focus in fungi after arriving in the Northwest in 1973 and innocently wandering into the mountains with a new mushroom book in hand. He is a longtime member of the North American Mycological Association and the Pacific Northwest Key Council, a group of amateur and professional mycologists that was formed to further the study of Northwest fungi. Over the years, he has served as foray mycologist for the Spokane Mushroom Club and has worked for several years conducting surveys of macrofungi for the U.S. Forest Service. As a photographer, Drew has supplied images for numerous mycological papers and books, as well as for MatchMaker, a digital mushroom identification program, of which he is a coauthor. He currently resides with his wife, Katie, at their home in the wild woods near Metaline Falls, Washington.

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Cap & Stem with Pores

KUROTAKE
Boletopsis leucomelaena, B. grisea

Habitat: The Boletopsis discussed here are mycorrhizal, and fruit from the ground near trees. They may be found singly, scattered or in small groups in mixed woods. B. leucomelaena typically associates with spruce; B. grisea is more likely to be found near pine species. Both are common in our area.

Description: The name Kurotake is used to refer to several closely related Boletopsis species that are difficult to separate visually; they are sometimes referred to as the Boletopsis leucomelaena group, which also includes B. grisea and perhaps others that are as yet unnamed. These cap-and-stem mushrooms have pores, much like Boletes, but the flesh and pore surface are tough—somewhat like polypores (shelf mushrooms with pores; see pgs. 198–219). B. leucomelaena is sometimes described as being taller and thinner than B. grisea, with caps that are consistently darker. In general, caps of Kurotake are dingy white or gray when young, developing dark streaks or blotches over time; caps of mature specimens may be dark gray or blackish overall (particularly in B. leucomelaena) and are up to 8 inches wide. Edges are often wavy or irregular. The pore surface is bright white, darkening slightly with age; it extends down slightly onto the top of the stem. The pores are finely textured and angular to rounded in shape. Stems are 1.5 to 4 inches tall and one-third to one-half as thick; they are dull white to pale gray, developing darker streaks with age. The stems may be attached to the caps somewhat off-center; stem bases are tapered. There is no ring.

Spore Print: White to pale brown.

Season: Summer through fall.

Other Names: B. subsquamosa is used in some references to refer to the two Boletopsis species discussed here.

Compare: Albatrellus species have similar growth forms, but their coloration is usually quite different; they are found near conifers. Flett’s Polypore (pg. 184) is one of the closest in color. Its caps are grayish-blue, and it develops orangish cracks or patches with age. A. avellaneus looks somewhat like a young, pale-capped Boletopsis; its caps are whitish to pinkish-tan, with orangish areas. Caps are less than 4 inches across.

Notes: Kurotake are typically very bitter, but soaking in brine or drying tempers the bitterness; some consider it a choice edible when it is properly prepared.