When: 2012-02-03

Collection location: Stebbins Cold Canyon Reserve, Solano Co., California, USA [Click for map]

Who: Byrain

No specimen available

Notes:
Under oak and some Pinus sabiniana, they have a spermatic odor and the immature specimen has white/pallid gills.

The cystidia have an encrusted apex with thickened walls (2-3 μm thick) which is yellowish in KOH (Chrysocystidia).

Spore range = (7) 8 – 10 × 5 – 6 μm
Average spore = 8.73 × 5.25 μm
Average Q = 1.67
20 spores from a gill were measured.

Images

Spores
1000x
Mounted in KOH
Spores
1000x
Mounted in KOH
1μ divisions
Pleurocystidia
1000x
Mounted in KOH
1μ divisions
Cheilocystidium
1000x
Mounted in KOH
1μ divisions

Proposed Names

57% (1)
Recognized by sight
Based on microscopic features
83% (3)
Recognized by sight
Used references: http://tinyurl.com/7cc5hg7
Based on microscopic features
85% (1)
Recognized by sight: Appears to be the undescribed, more robust oak loving species described in http://www.mykoweb.com/CAF/species/Inocybe_insinuata.html

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= Observer’s choice
= Current consensus

Comments

Add Comment
Inocybe sp.
By: Byrain
2012-02-05 18:45:26 CST (-0500)

These appear to me to be similar to I. geophylla, but none of the descriptions I have found for that species mention any chrysocystidia nor any other small & white Inocybe with a spermatic odor.