This name is a synonym of Salicornia europaea var. prona (Lunell) B. Boivin.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50110917) with original publication details: Amer. Midl. Naturalist 1: 236 1910.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:225561-2.
This name was in version 1 of The Plant List, record tro-50110917, and has not been changed.