311286 | Psorothamnus fremontii (Torr. ex A. Gray) Barneby | | | a | | Psorothamnus fremontii (Torr. ex A. Gray) Barneby | |
406004 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. arborescens | | | a | i | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var.arborescens | |
406005 | Psorothamnus emoryi (A. Gray) Rydb. | | | a | | Psorothamnus emoryi (A. Gray) Rydb. | |
406006 | Psorothamnus spinosus (A. Gray) Barneby | | | a | | Psorothamnus spinosus (A. Gray) Barneby | |
406317 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. minutifolius (Parish) Barneby | | | a | i | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var.minutifolius (Parish) Barneby | |
406318 | Psorothamnus schottii (Torr.) Barneby | | | a | | Psorothamnus schottii (Torr.) Barneby | |
406319 | Psorothamnus scoparius (A. Gray) Rydb. | | | a | | Psorothamnus scoparius (A. Gray) Rydb. | |
407758 | Psorothamnus fremontii (Torr. ex A. Gray) Barneby var. fremontii | | | a | i | Psorothamnus fremontii (Torr. ex A. Gray) Barneby var.fremontii | |
407759 | Psorothamnus fremontii (Torr. ex A. Gray) Barneby var. attenuatus Barneby | | | a | i | Psorothamnus fremontii (Torr. ex A. Gray) Barneby var.attenuatus Barneby | |
408796 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby | | | a | | Psorothamnus arborescens (Torr. ex A. Gray) Barneby | |
437459 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. pubescens (Parish) Barneby | | | a | i | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var.pubescens (Parish) Barneby | |
448240 | Psorothamnus polydenius (Torr.) Rydb. | | | a | | Psorothamnus polydenius (Torr.) Rydb. | |
454591 | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var. simplicifolius (Parish) Barneby | | | a | i | Psorothamnus arborescens (Torr. ex A. Gray) Barneby var.simplicifolius (Parish) Barneby | |
454594 | Psorothamnus kingii (S. Watson) Barneby | | | a | | Psorothamnus kingii (S. Watson) Barneby | |