boletaceae . . . ] by michael kuo there are only a few north american members of this genus, and they are relatively easy to separate from the other boletes ; they are shaggy to scaly, blackish or grayish mushrooms with partial veils and woolly stems. their flesh stains pinkish or orangish red when sliced...
slightly enlarged base; dry; tough; often twisted; somewhat longitudinally ridged; finely silky or finely dusted; whitish above, buff to brownish below; darkening with age; often with white basal mycelium and/or rhizomorphs attached to the base. flesh: whitish to pale pinkish tan; unchanging when sliced...
the apex, with tiny concolorous dots; sheathed for the bottom two-thirds with a copious veil of brownish orange gluten and, underneath the gluten, a white, fibrillose veil; the gluten drying and stretching out into chevron-like patterns and lines; basal mycelium white. flesh: white; unchanging when sliced...
cm thick; usually tapering to the base, and often developing a rooting portion underground; mealy at the apex, but bald or finely silky below; whitish to pale orange, discoloring a little orangish or brownish with age or when handled; white at the base; solid. flesh: white; firm; unchanging when sliced...
becoming orangish with maturity; when fresh staining orangish yellow where damaged, then slowly brownish. stem: – cm long; – cm thick; more or less equal; bald; without potholes; dry; orangish cream to orange. flesh: whitish; fairly firm; when fresh staining very slowly yellow to pale orange when sliced...
cream colored and finally dingy tan; usually staining and discoloring brownish. stem: - cm long; - cm thick; whitish, discoloring brownish or tan; hard; dry; smooth or sometimes developing scales; without potholes; more or less equal, or tapering to base. flesh: firm in cap; white; unchanging when sliced...
surface and is usually arched gracefully downwards and away from the stem; fairly bald above the ring, but densely scaly below; white at first, becoming brownish toward the base with maturity; base with white mycelial threads . flesh: white, becoming brownish in the stem with age; not changing when sliced...
thick; equal or slightly to moderately club-shaped; hairy; whitish at first, but soon bruising and discoloring red, then brown; with a flimsy, sheathing, collapsing ring that is initially white but becomes stained brown; basal mycelium white. flesh: white throughout; staining slowly reddish when sliced...
the stem; close; short-gills frequent; white, becoming brownish with age. stem: cm long and cm thick for the illustrated collection (up to x cm according to the literature); equal with a slightly swollen base; dry; white underneath dark brown to nearly black scabers . flesh: white; unchanging when sliced...
developing a central, longitudinal groove; bald; bright to dull green. stem: - mm long; - mm wide; cylindric; when fresh, pale pastel green and bald underneath darker green tufts and scales; sometimes becoming darker green and more or less bald in very old age. flesh: whitish to greenish; unchanging when sliced...