Eriogonum arcuatum

Eriogonum jamesii var. flavescens and var. xanthum as treated in Kartesz (1999) are split out into the separate species E. arcuatum in Reveal's treatment in FNA (Vol. 5, 2005). E. jamesii var. rupicola which had been included in E. jamesii var. flavescens by Kartesz (1999) is accepted as E. arcuatum var. rupicola and what remains of var. flavescens becomes E. arcuatum var. arcuatum (including E. bakeri and E. jamesii var. higginsii). E. jamesii var. xanthum is accepted as E. arcuatum var. xanthum. E. jamesii var. wootonii is elevated to the species E. wootonii. The remaining varieties of E. jamesii: var. jamesii, var. simplex, and var. undulatum remain as the more narrowly accepted E. jamesii in the FNA treatment.