It give details as below:
C. × limonia var. jambhiri:
C. jambhiri Lush.(Tanaka (1961)),
C. limon (Swingle and Reece (1967)),
C. × taitensis Risso (Zhang and Mabberley (2008), Rough lemon [2, 16, 17]
So the latest classification was C. × taitensis Risso (Zhang and Mabberley (2008), as per this.