Crataegus pruinosa

Crataegus pruinosa

Crataegus pruinosa (H. L. Wendl.) K. Koch.
Deu.: Bereifter Weißdorn.
Bot. syn.: Crataegus delawarensis Sarg., Mespilus pruinosa H. L. Wendl.

I have no articles for this botanical term, but there might be some for the next level down (if found).