Cryptocoryne evae (Rataj)Syn. of SIA
Probably the same plant Ridley described as C. grandis. Both Rataj and Ridley said this was "the biggest Cryptocoryne they'd ever seen" (modulo ciliata in Ridley's case).
Cryptocoryne ewansii (Rataj)Syn. of SIA
The "ruffled" or "wavy" leafed form of C. cordata siamensis.
Cryptocoryne grabowski (Rataj)Current as C. cordata grabowski
grandis and grabowski turn out to tbe the same plant, Ridley had no idea it had already been described.
Cryptocoryne grandis (Ridley)Current as C. cordata grabowski
The "grand" or giant form of cordata ("grandis" in Latin translates to "magnificant" in English).
Cryptocoryne kerri (Rataj)Syn. of COR
The round leaved form of the Siamese cordata species group. Now referred to C. cordata cordata.
Cryptocoryne siamensis siamensis - Current as C. cordata siamensis