At first I did not think these represented the species Amanita crenulata. The caps feature more yellow than I expect with crenulata, the small specimen had persistent annuli, and the stipe bases featured more hefty deposits than I generally see with crenulata. In general, the basal bulb of crenulata shows (at most) a pigmented powdery deposit. But, reading the description of crenulata on the Amanita Studies Website, I see that a white "collar" atop the basal bulb of crenulata may represent the limbus internus. This appears to be consistent with the stipe bases seen in this observation.