Page author: Wynn Tranfield
Clitocybula atrialba
black and white Clitocybula
Specimens
Photos

Habitat: C. atrialba is a western species that occurs singly on the (sometimes buried) wood of alder and perhaps other hardwoods.

Substrate: Wood or woody debris

Spores: whitish amyloid spores

Conservation Status: Not of concern

Description:
Identification Notes:

Clitocybula is a genus of small to larger clitocybe- or collybia-like mushrooms that occur on wood or woody debris and have whitish amyloid spores. Some of the species grow in clusters, such as C. abundans (Peck) Singer, and have adnate to slightly decurrent gills. C. atrialba is a western species that occurs singly on the (sometimes buried) wood of alder and perhaps other hardwoods. It can be very common in some years, but totally absent in others. It is an elegant slender-stiped mushroom with a funnel-shaped, dark smoky to blackish brown, matted fibrillose to furfuraceous cap, distant, decurrent, pale grayish gills that end at a collar-like line on the stipe apex, and a scaly to furfuraceous stipe that is colored like the cap, enlarged below, and often bears white strands at its base.

Comments:

It can be very common in some years, but totally absent in others.

Accepted Name:
Clitocybula atrialba (Murrill) Singer

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Clitocybula atrialba in the Consortium of Pacific Northwest Herbaria database.

CalPhotos: Clitocybula atrialba photos.

2 photographs:
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