You selected Polygonella fimbriata var. robusta (Small) Horton. This is a synonym for:

Accepted scientific name:
Polygonella robusta (Small) Nesom & Bates (accepted name) 1 literature reference for Polygonella robusta (Small) Nesom & Bates
Synonyms:
Polygonella fimbriata var. robusta (Small) Horton (synonym) 3 literature references for Polygonella fimbriata var. robusta (Small) Horton
Thysanella robusta Small (synonym) 2 literature references for Thysanella robusta Small
Infraspecific taxon: Polygonella robusta (Small) Nesom & Bates
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Polygonales
Family Polygonaceae
Genus Polygonella
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=195643
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:246ecc34-60a7-102d-be47-00304854f810:ac2010