This taxon name is current. The available references for this name are:
Chamaesyce Gray is a taxonomic synonym.
Reason: See Steinmann & Porter in Ann.Missouri.Bot.Gard. 89:479(2002), regarding the sinking of Chamaesyce under Euphorbia.
See also: A longer explanation of these and other terms in our Plant Names Primer.
A taxon name which is no longer current will retain its ‘Threatened’ status until publication of the next Wildlife Conservation (Rare Flora) Notice.