Name: Tylopilus sordidus (Frost) A.H. Sm. & Thiers
Most Confident Observations:
Copyright © 2018 Casandra McWest (MorningAnew)
Copyright © 2013 Dave W (Dave W)
Copyright © 2012 Dave W (Dave W)
Copyright © 2012 Dave W (Dave W)
Version: 4
Previous Version 

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


Rank: Species

Status: Deprecated

Name: Tylopilus sordidus

Author: (Frost) A.H. Sm. & Thiers

Citation: Mycologia 60(4): 950 (1968)

Preferred Synonyms:Porphyrellus sordidus (Frost) Snell


Kingdom: Fungi

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Boletales

Family: Boletaceae

Genus: Tylopilus

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Brief Description: [See More | Edit]

Cap: 2-5 cm; convex, becoming broadly convex or nearly flat in age; dry; finely velvety when young, typically cracking and splitting with maturity, exposing whitish flesh that may stain pinkish or bluish; dark brown to grayish, often with bluish tints by maturity, at least near the margin.

Pore Surface: Whitish to yellowish at first, becoming brown to reddish brown; bruising blue, then reddish brown; pores circular, 1-2 per mm; tubes to 1 cm deep.

Stem: 4-8 cm long; up to 1 cm thick; more or less equal; colored like the cap; not reticulate.

Flesh: White; staining pinkish and/or blue when sliced.

Odor and Taste: Taste mild; odor not distinctive or slightly bleachlike.

Chemical Reactions: Ammonia dark purple to black on cap; yellowish to orangish on flesh. KOH pinkish, orangish, reddish, or negative on cap and flesh. Iron salts negative on cap; bluish to grenish or negative on flesh.

Spore Print: Brown to reddish brown or purplish brown.

Microscopic Features: Spores 10-17 × 4-8 µ; subfusoid to elliptical; smooth. Cystidia to about 75 × 20 µ; mostly fusoid-ventricose; contents often coagulated or grainy. Pileipellis a cutis of mostly erect, cylindric, septate elements 8-18 µ wide, yellowish in KOH; often with cystidioid apices.

I am treating Tylopilus cyaneotinctus and Tylopilus fumosipes as probable synonyms.

Descriptions: [Create]


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Created: 2007-06-19 02:54:00 CDT (-0400) by Nathan Wilson (nathan)
Last modified: 2020-07-05 17:44:19 CDT (-0400) by I. G. Safonov (IGSafonov)
Viewed: 417 times, last viewed: 2020-09-18 09:02:27 CDT (-0400)
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