Did you mayhaps mean Sorbus?
“The sorbus you see are members of the rosaceae or rose family - the most of which are susceptible to a disease known as fireblight.”
“Ness Gardens has a National Collection of sorbus (0151 353 0123).”
“These (like many sorbus) have an unfortunate meaty fragrance that flies adore.”
“www.avelandtrees.co.uk ; 01778 440715 collected seed from the existing sorbus and grew the progeny which are part of the tree mix.”
Looking for tweets for sorbus.