cedar-hawthorn rust fungus on a shadbush shrub in connecticut

rust fungus orange color closeup pathogenic heteroecious gymnosporangium plant pathogen disease cedarhawthorn serviceberry amelanchier shrub fruit berry flowering vascular seed leaf sexual reproduction parasite angiosperm summer primary producer trophic pyramid south windsor connecticut england eastern north america conservation nature environment outdoors people cedar-hawthorn shadbush serviceberries garden summertime