Pyrus oligodonta subsp. nana Donn Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rosaceae genus Amelanchier species Amelanchier bartramiana Name Homonyms Pyrus oligodonta subsp. nana Donn Pyrus oligodonta subsp. nana Donn ex Muhl.