Neoërysiphe cumminsiana (Braun) Braun, 1999
mycelium amphigenous, also on the stems. Appressoria ± lobed, often paired. Conidia formed in rather short chains, without fibrosin bodies, short-elliptic. Cleistothecia with 5-24 asci, that ripen only after the hibernation. Appendages mostly numerous, sub-equatorial, 0.5-2.5 x the diameter; they are mycelioid, almost hyaline, indistinctly septate, mostly unbranched.
This North American species is, according to Klenke & Scholler, in Europa known only from the cultivated Bidens ferulifolius. The other species listed, derived from Braun & Cook, are in Europe potential host plants.
Ale-Agha, Boyle, Braun ao (2008a), Braun & Cook (2012a), Guatimosim, Pinto, Pereira ao (2015a), Jage, Klenke & Kummer (2010a), Klenke & Scholler (2015a).