Public Description of Austroboletus gracilis (Peck) Wolfe

Title: Public Description (Default)
Name: Austroboletus gracilis (Peck) Wolfe
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Description status: Unreviewed

Taxonomic Classification:

Domain: Eukarya
Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Boletaceae

General Description:

Cap: 3-10 cm; convex to broadly convex in age; dry; smooth or felty; sometimes becoming cracked; margin even; reddish brown to cinnamon to dull yellow brown.

Pore Surface: Whitish becoming pinkish to flesh-colored to pinkish brown; bruising brownish; pores circular, 1-2 per mm; tubes to 2 cm deep.

Stem: 7-18 cm long; .5-1 cm thick; gracefully narrowing to apex, or more or less equal; colored like the cap or paler; sometimes slightly curved; frequently longitudinally grooved and/or vaguely reticulate; white at the base.

Flesh: White or pinkish; unchanging when sliced.

Odor and Taste: Taste mild to slightly acidic; odor not distinctive.

Chemical Reactions: Cap surface dark red to orange with ammonia, dark brown with KOH; flesh negative with KOH or ammonia.

Spore Print: Rosy brown.

Microscopic Features: Spores 10-17 × 5-8 ยต; minutely pitted (use oil immersion lens); roughly elliptical.


widely distributed in eastern North America.

Mycorrhizal with conifers (especially eastern hemlock) or sometimes with hardwoods; growing alone or scattered; summer and fall.


Kuo, M. (2005, March). Austroboletus gracilis. Retrieved from the MushroomExpert.Com Web site:


Austroboletus gracilis (Peck) Wolfe, Biblthca Mycol. 69: 69 (1980) 1979

Boletus gracilis Peck 1872

Description author: walt sturgeon (Request Authorship Credit)

Created: 2011-12-27 00:46:47 GMT (+0000) by walt sturgeon (Mycowalt)
Last modified: 2013-12-29 03:18:41 GMT (+0000) by walt sturgeon (Mycowalt)
Viewed: 37 times, last viewed: 2018-07-11 01:26:00 BST (+0100)