This name is a synonym of Euphorbia pediculifera Engelm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 374678) with original publication details: Cat. Pl. Salton Sink 6 1913.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60450170-2.
This name was in version 1 of The Plant List, record kew-374678.