Note fluffy veil that distinguishes S. ambigua from Leratiomyces percevalii with its fibrous veil; Siegel and Schwarz 2016.
Under Coast Live Oak on Cal campus
Growing in oak duff. Caps ~6cm. Webbing under cap. Textured stipe.
Found by @betweenthelyons
substrate = Comarostaphylis diversifolia
This is the Type collection of Tricholoma megalophaeum (NS4666).
http://www.indexfungorum.org/Publications/Index%20Fungorum%20no.502.pdf
Unknown, would love to work towards an identification. Spores are approximately 5x2 microns. No asci present.
Been meaning to iNat the Orobanche on campus. Looking forward to seeing live flowers.