Observation 93116: Cortinarius aurantiobasis Ammirati & A.H. Sm.

When: 2012-04-20

Collection location: Sawmill Mountain Road, Tuolumne Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

Specimen available

These were growing under small pines at ~ 4000 Ft.
Caps were up to 5.3 cm across.
Could not get a spore print but the spores were ~ 7.9-10.0 X 5.1-6.5 microns and moderately to strongly rough. Q(ave.) = 1.47.
KOH on the cap was a dark reddish brown.
Cortinarius croceus is a good possibility but the spores seem a little too large & rough and maybe the coloring is a little too dark?
I’m going with C. croceus as it seems to be considered the local current name for this common Dermocybe.

Proposed Names

26% (1)
Recognized by sight: It is possible this species is undescribed. This collection has orange gills while C. croceus usually has yellow gills.
Used references: Species descriptions of C. aurantiobasis and C. idahoensis.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Emma, thanks for the suggestion.
By: Ron Pastorino (Ronpast)
2012-06-22 21:19:57 CDT (-0400)

Even without access to the description, I like it better than C. croceus.

Created: 2012-04-21 19:45:28 CDT (-0400)
Last modified: 2015-07-25 23:12:18 CDT (-0400)
Viewed: 116 times, last viewed: 2018-01-13 09:54:31 CST (-0500)
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