Name: Tylopilus alboater (Schwein.) Murrill
Most Confident Observations:
Copyright © 2016 Dave W (Dave W)
Copyright © 2013 Hamilton (ham)
Copyright © 2008 Debbie Viess (amanitarita)
Copyright © 2011 Martin Livezey (MLivezey)
Version: 3
Previous Version 

First person to use this name on MO: Nathan Wilson
Editors: Michael Wood, walt sturgeon


Rank: Species

Status: Accepted

Name: Tylopilus alboater

ICN Identifier: missing

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Author: (Schwein.) Murrill

Citation: Mycologia 1(1): 16 (1909)

Deprecated Synonyms: Porphyrellus alboater (Schwein.) E.-J. Gilbert


Domain: Eukarya

Kingdom: Fungi

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Boletales

Family: Boletaceae

Genus: Tylopilus

Brief Description: [See More | Edit]

Cap: 3-15 cm; convex, becoming broadly convex or flat; dry; velvety; sometimes with a white dusting when young; black or dark grayish brown; in my experience, often darkening on handling.

Pore Surface: Whitish becoming pinkish; bruising red, then brown to black; pores angular, 2 per mm; tubes to 1 cm deep.

Stem: 4-10 cm long; 2-4 cm thick; more or less equal, or enlarging towards base; colored like the cap or paler; sometimes with a white dusting; fairly smooth; not reticulate or merely finely so near the apex; in my experience, often darkening on handling.

Flesh: Thick and white; discoloring pinkish on exposure to air, then turning slowly grayish; black in the stem base.

Odor and Taste: Not distinctive.

Chemical Reactions: Flesh greenish to bluish with iron salts; pinkish orange with KOH; olive, then brownish orange with ammonia. Cap orangish with KOH; negative with iron salts or ammonia.

Spore Print: Pink.

Microscopic Features: Spores 7-11 × 3.5-5 µ; fusiform to subfusiform; smooth. Pileipellis a cutis of elements 4-7 µ wide, smoky yellowish in KOH.

Descriptions: [Create]


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