Page author: Wynn Tranfield
Tricholoma sejunctum
deceiving knight, separating Tricholoma

Conservation Status: Not of concern

Edibility: Not edible.


Not edible.

Identification Notes:

Tricholoma sejunctum is a medium-sized fungus with a greenish brownish yellow, slightly viscid cap adorned with abundant, well defined, blackish fibrils that radiate from the dark center, and whitish to pale yellow gills and stipe. The odor is mild to farinaceous and the taste mild to unpleasant. Because of its yellowish colors, T. sejunctum often is mistaken for T. flavovirens, however, the latter usually is larger and fleshier, has a yellow to brownish cap with only a faintly fibrillose appearance, and the even yellow color of the gills and stipe is deeper than the often splotchy yellow of T. sejunctum. What constitutes the “real” T. sejunctum has been subject to differences of opinion and consensus has not yet been reached. Many illustrations and descriptions of European material suggest a fungus with white (but often yellow-tinged) gills and stipe; some suggest growth with oaks and beech, others with conifers, and a variety of forms, and even new names such as T. arvernense Bon and T. viridilutescens M. M. Moser, have been erected for different variants. Although clearly similar to the European species (whether singular or plural), our fungus could be a distinct entity. Until the necessary critical studies have been done, however, we will use the name T. sejunctum for it.

Accepted Name:
Tricholoma sejunctum (Fr.) Quél.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Tricholoma sejunctum in the Consortium of Pacific Northwest Herbaria database

CalPhotos: Tricholoma sejunctum photos

6 photographs:
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