This name is a synonym of Iliamna rivularis (Douglas) Greene.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50298721) with original publication details: Fl. Bor.-Amer. 1(3): 107 1831.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:150206-2.
This name was in version 1 of The Plant List, record tro-50298721.