Observation 158762: Polyporales sensu lato

When: 2014-01-20

Collection location: Black Mountain Campground, Yancey Co., North Carolina, USA [Click for map]

Who: Mike Hopping (AvlMike)

No specimen available

These whitish polypores measure 6-9 cm wide by 5-6 cm in height. The upper surface is finely textured but hairless. All surfaces bruise yellowish-tan with handling. The fungus is very tough but not woody (texture a bit grabby, like very hard rubber) but a sharp knife under body weight will eventually cut it if you don’t slip and cut your fingers off first. The café au lait medullary core is faintly zoned and sharply demarcated from the white outer flesh. Pores are round and average 4/mm. The tube layer appears to be single, up to 6 mm deep. KOH reaction is brown on both brown and white areas of the flesh. Smell not distinctive. Not much taste—definitely not quinine bitter. Found on dead hemlock.



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Add Comment
Fomitopsis meliae
By: Mike Hopping (AvlMike)
2015-02-27 20:08:43 CST (-0500)

Interesting idea. The old description does mention occasional occurrence on conifers. The geographic range would fit. Too bad that Google seems to know so little about it under this or former names.

F. pinicola description doesn’t really fit
By: Mike Hopping (AvlMike)
2014-01-29 09:18:51 CST (-0500)

Thanks for the idea, but the book descriptions don’t match. Feel free to educate me.

I saw this species on two hemlocks. All were white and appeared to have a single tube layer. None had color or varnish on the upper surface. None had any suggestion of a stalk or flattening of the fruit body; the shape was consistently that of a boiled egg half protruding from the tree bark. Typical Ganoderma tsugae was also found in the area that day but not on these trees; last year’s G. tsugae fruiting bodies retain a purplish varnish color while softening from within.

Two-tone oddball
By: Mike Hopping (AvlMike)
2014-01-28 17:19:17 CST (-0500)

Hard marshmallows with a caramel center, shown in a second photo. Any IDeas?