Amanita brunnescens var. pallida may or may not be a species distinct from Amanita brunnescens. It has often been noted that specimens of whitish varieties can be found next to those that are brown. I going over my photos, I have noticed that the variable brown to whitish- brown specimens have been growing in mixed conifer-deciduous woods, while the white versions were growing under hardwoods exclusively. This may or may not be significant.