This name is a synonym of Chelone caeruleum (Nutt.) Spreng..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50080704) with original publication details: Gen. N. Amer. Pl. 2: 52–53 1818.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60431633-2.
This name was in version 1 of The Plant List, record tro-50080704, and has not been changed.