Physocarpus opulifolius var. nanus Zabel (Rosaceae) is native to 39 botanical countries across Northern America.
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Rosales
Family
Rosaceae
Genus
Physocarpus
Specific Epithet
opulifolius
Infraspecific Epithet
nanus
Authorship
Zabel