Try to make your search as simple as possible:
Aronia will find all items including that sequence of letters.
Search results for "Aronia":
"Aronia arbutifolia x melanocar" - Aronia prunifolia x c.s.
"Aronia floribunda" - Aronia prunifolia x c.s.
"Osmaronia cerasiformis" - Oemleria cerasiformis