Arnica venosa H. M. Hall species accepted

Arnica acaulis (Walter) Britton, Sterns & Poggenb. species accepted

Arnica angustifolia Vahl species accepted

Arnica cernua Howell species accepted

Arnica chamissonis Less. species accepted

Arnica cordifolia Hook. species accepted

Arnica dealbata (A. Gray) B. G. Baldwin species accepted

Arnica discoidea Benth. species accepted

Arnica fulgens Pursh species accepted

Arnica gracilis Rydb. species accepted

Arnica griscomii Fernald species accepted

Arnica intermedia Turcz. species accepted

Arnica lanceolata Nutt. species accepted

Arnica latifolia Bong. species accepted

Arnica lessingii (Torr. & A. Gray) Greene species accepted

Arnica lonchophylla Greene species accepted

Arnica longifolia D. C. Eaton species accepted

Arnica louiseana Farr species accepted

Arnica mallotopus (Franch. & Sav.) Makino species accepted

Arnica mollis Hook. species accepted

Arnica montana L. species accepted

Arnica nevadensis A. Gray species accepted

Arnica ovata Greene species accepted

Arnica × paniculata A. Nelson species accepted

Arnica parryi A. Gray species accepted

Arnica porsildiorum B. Boivin species accepted

Arnica rydbergii Greene species accepted

Arnica sachalinensis (Regel) A. Gray species accepted

Arnica sororia Greene species accepted

Arnica spathulata Greene species accepted

Arnica unalascensis Less. species accepted

Arnica viscosa A. Gray species accepted