When: 2019-10-12

Collection location: Sierra National Forest, Fresno Co., California, USA [Click for map]

Who: Pgrunow

No specimen available

Notes:
Habitat: fir and lodgepole pine at 7500’, soil relatively sandy
Bulb color: yellowish-cream
Cap color when fresh: creamy light yellow to dull yellow, orange-brown near center
Cap color in age: cap becomes faintly reddish chestnut-brown
Flesh: white
KOH: maroon or dark purplish-red on cap and stipe, no reaction on stipe flesh
Odor: none

Images

heavy bulb with yellow band on top
KOH on cap
specimen after 2 weeks
bulb color and shape
KOH on stem
stipe flesh
stipe flesh and exterior with KOH

Proposed Names

57% (1)
Recognized by sight: Creamy light yellow to golden gills when fresh; olive-yellow, dull yellow and orange-brown tones on cap, white stipe, pale cortina when young, lack of odor, Abies habitat, large white basal bulb with yellow rim, and KOH reactions. It is a fall-fruiting species; C. elotoides is a similar mushroom in same location and habitat, but that has a white veil patch when young and can be eliminated by the KOH reaction. C. elegantior group has a lighter red KOH reaction and different spores. C. anetholens has a distinctive anise odor and the C. napus group is also different. C. talus has different lamellae color when young and C. saxamontanus should have violet flesh. Compared to other similar spp.
Used references: Nacorts.com, “The largest type study of Agaricales species to date: bringing identification and nomenclature of Phlegmacium (Cortinarius) into the DNA era”, Mushroom Observer observations, Mushrooms of the Redwood Coast
Based on microscopic features: 5-8 × 9-12, somewhat rough
Based on chemical features: KOH tests (see description)

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= Observer’s choice
= Current consensus

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