You selected Euphorbia melanadenia var. subinappendiculata Engelm. This is a synonym for:

Accepted scientific name:
Euphorbia cinerascens Engelm. (accepted name) 1 literature reference for Euphorbia cinerascens Engelm.
Synonyms:
Chamaesyce cinerascens (Engelm.) Small (synonym) 1 literature reference for Chamaesyce cinerascens (Engelm.) Small
Euphorbia melanadenia var. subinappendiculata Engelm. (synonym) 1 literature reference for Euphorbia melanadenia var. subinappendiculata Engelm.
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Malpighiales
Family Euphorbiaceae
Genus Euphorbia
Distribution: S. U.S.A. to NE. Mexico
Additional data: -
Source database: World Checklist of Selected Plant Families, 27 Nov 2009
Latest taxonomic scrutiny: Govaerts R., 11-Nov-2003
Online resource: http://apps.kew.org/wcsp/namedetail.do?accepted_id=78992&repSynonym_id=-9998&name_id=78992&status=true
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:27fd85e8-60a7-102d-be47-00304854f810:ac2010