Neither Barneby (1977) nor Wemple (1970) indicate the plant to extend into the Rocky Mountain states. Barneby notes the species [as Dalea multiflora (Nutt.) Shinners] to be closely related to P. candidum (Michx.) [but as D. candida (Michx.) Willd.], and both authors mention the occurence occasional intermediate plants where the two species are sympatric in Oklahoma. Barneby notes the P. multiflorum to be widespread and locally common. Neither Correll and Johnston (1970), Martin and Hutchins (1980), nor Roalson and Allred (1996) record the species for New Mexico. Possibly the species entered onto one of many independently compiled lists of rare or sensitive species for various management areas by misidentification of P. candidum, which P. multiflorum resembles before inflorescences elongate in P. candidum.