Not sure about the I reactions. But it would be very unlikely for Sphaerophorus on that substrate.

Daph,

It's defiantly Sphaerophorus, my only problem is I collected something I though was a fruticose Cladonia on soil, at least that is what I wrote in my book. When I removed the contents of the sack, the only fruticose sample was this Sphaerophourus. I remember pulling something off the soil, I don't remember getting something off a tree.