Groenewald et al., Studies in Mycology 75: 115-170, 2013 Cercospora on Gaura and Oenothera in New Zealand cannot be distinguished on the individual gene trees from C. alchemillicola (see species notes under that species above) described from New Zealand on Alchemilla mollis (Braun & Hill 2002). We consider the latter two isolates to represent a distinct species, which cannot be formally named due to the absence of good specimens. In the combined tree (Fig. 2 part 4), it is a sister taxon to C. alchemillicola.