Wine-cap Stropharia (white form) Stropharia rugosoannulata(?)  

Status:

Compare typical Wine-cap Stropharia. This form may end up treated as a distinct species. It has a different odor, narrower spores, and a different reaction to KOH (J. Solem, pers. comm.). See notes at Michael Kuo's web site MushroomExpert.com. Typically found on mulch.

Description:

All parts white at all stages instead of wine-red to purple. The unpleasant odor, reaction to KOH as orange instead of olive green, narrower spores, and color distinguish it from the usual Wine-cap Stropharia. (J. Solem, pers. comm.)

There are 2 records in the project database.

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Wine-cap Stropharia (white form) (young fruiting bodies) in Howard Co., Maryland (6/28/2015). Photo by Joanne Solem. (MBP list)

Wine-cap Stropharia (white form) (mature fruiting body) in Howard Co., Maryland (6/28/2015). Photo by Joanne Solem. (MBP list)

Wine-cap Stropharia (white form) in Howard Co., Maryland (6/28/2015). Image shows young fruiting body including gills, ring, and stalk. Photo by Joanne Solem. (MBP list)

Wine-cap Stropharia (white form) in Howard Co., Maryland (6/28/2015). Image shows mature gills with light edges, substantial ring, and stalk. Photo by Joanne Solem. (MBP list)

Spores collected from a Wine-cap Stropharia (white form) specimen in Howard Co., Maryland (6/28/2015). Ellipsoid, smooth, purple-brown; measured 10.2-12.8 x 6.6-6.9 microns. Photo by Robert Solem. (MBP list)


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