North American Cortinarius Collections
An ongoing study
An olivaceous-yellow to brown Leprocybe in section Veneti. It is less common than Cortinarius clandestinus, and occurs exclusively in fall. It has more olive-brown tones than C. veneto-occidentalist sensu strictu, which is known only from boreal forests.
Consider Cortinarius clandestinus when you find a Leprocybe with a black-scaley cap and cream to greenish-yellow tones. It one of few Leprocybe that fruit in Spring, making Spring ID easier. However, C.clandestinus may also fruit in fall so it's not that easy!
Recent work on Cortinarius section Leprocybe (Ammirati et al, 2020) has described many new species and given us new insight on the diversity of North American species. One of these is Cortinarius arosquamosus, discussed here.
North American Cortinarius Collections 