Identifying Your Bolete
1.5
ASH-TREE BOLETE
Gyrodon merulioides, Boletinellus merulioides
Frequency
Frequent
Habitat
Non mycorrhizal. Under ash trees and on lawns. In Outaouais, Quebec, we find the Ash-tree Bolete fruiting on an old stump and a decaying trunk of a Poplar Aspen.
Cap
Brownish to dark brown.
Margin
Even.
Tubes
Short, strongly decurrent.
Pores and Pore Surface
Pores angular, interveined, very large, 1 mm or more in width; the ribs going from the center to the margin are a sure criterion for its identification.
Stalk
Stalk often laleral for 50% of the fruitbodies.
Stalk Feature
Apex colored like the pore surface, lower portion colored like the cap surface.
Flesh
White or yellowish, unchangeable according to the literature, but it may turn blue when cut in older fruitbodies and more intensely towards the base of the stipe. More rarely, it can be reddish in color.
White or yellowish, unchangeable according to the literature, but it may turn blue when cut in older fruitbodies and more intensely towards the base of the stipe. More rarely, it can be reddish in color.
Basal Mycelium
Chemical reactions
FLESH: beige with KOH and NaOH, blackish with phenol and gray with formalin.
CAP: reddish yellow with KOH, reddish with NaOH, blackish with FeSO4, NH4OH and phenol, yellow with formalin.
TUBES: brownish with KOH and NaOH, blackish with FeSO4, NH4OH and phenol.
Comments
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Occasionnaly, some other species can have a lateral or excentric stipe as illustrated for the following boletes: 3.5 Boreal Bolete and 6.8 Pulveroboletus lignicola.
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