You selected Angelica tomentosa var. hendersonii (Coult. & Rose) Di Tomaso. This is a synonym for:

Accepted scientific name:
Angelica hendersonii Coult. & Rose (accepted name) 1 literature reference for Angelica hendersonii Coult. & Rose
Synonyms:
Angelica tomentosa var. hendersonii (Coult. & Rose) Di Tomaso (synonym) 3 literature references for Angelica tomentosa var. hendersonii (Coult. & Rose) Di Tomaso
Infraspecific taxon: Angelica hendersonii Coult. & Rose
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Apiales
Family Apiaceae
Genus Angelica
Distribution: North America
Additional data: -
Source database: ITIS, Sep 2009
Latest taxonomic scrutiny: Kartesz J., 15-Mar-2000
Online resource: http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=29444
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:24962a40-60a7-102d-be47-00304854f810:ac2010