pointy, rooting stipe; growing with Quercus agrifolia
Slightly farinaceous odor, becoming very pronounced (and unpleasant) with age. Spore size:10.05x7.22µm
I believe the following specimen are the same species: https://www.inaturalist.org/observations/38311614
https://www.inaturalist.org/observations/38311503
https://www.inaturalist.org/observations/38311537
Amanita fuscostriata is my best guess
Growing under Quercus agrifolia; pointy, rooting stipe; the mushroom is about 5"-6" tall, and the cap is about the size of my hand; no detectable odor; cap margin sulcate