Observation 319528: Inocybe fuscidula Velen.

When: 2018-06-11

Collection location: Thunder Mountain, Amador Co., California, USA [Click for map]

Who: Pgrunow

No specimen available

Buttons starting out a light gray, then gray-brown and then straw-colored to pale ochre-buff. Always pretty light, though the strong sun may make it appear a bit paler in the picture. Pruinose silky white bloom evident on cap fibers and a (pruinose?) thin white margin, eventually coming off revealing more light-brown area. Smell weak. Near the base of a log in mixed conifer forest. Stipe thick for the size of the cap, shiny and white, with appressed pale fibrils, swollen toward the base (more or less club-shaped) with tiny white fuzzy hairs at base (see picture).
Spores a medium dark brown, rounded, 9-11 × 4.5-6.5


Proposed Names

29% (1)
Recognized by sight
57% (1)
Recognized by sight: sensu CA
This seems to be what has been called fuscidula in the Sierra Nevada in a few observations. Pleuro cystidia also compared to some similar spp. stipe without the orange/pink of nitidiuscula, pleuro not sized/shaped as in kauffmanii
Used references: keyed out using SVIMS Inocybe key and Ishida’s CA Inocybe key. Mushroom observer and mushroomhobby.com also used.
Based on microscopic features: spores, pleuro cystidia

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
No one has commented yet.

Created: 2018-06-12 13:05:48 CDT (-0500)
Last modified: 2018-07-13 15:31:30 CDT (-0500)
Viewed: 30 times, last viewed: 2018-12-30 06:20:23 CST (-0600)
Show Log