Dear Amit ji, Pl follow this link to get more info on this sp.
http://www.pacificbulbsociety.org/pbswiki/index.php/Kaempferia The site mentions a close similarity between K. elegans and K. pulchra. Quoting them as it is "....Some taxonomists consider this species and Kaempferia pulchra to be the same but more research needs to be done regarding this. Although superficially very similar, their flowers are easily distinguishable from each other." However, "The Plant List" treats K. pulchra under the synonymy of K. elegans. K. elegans has been mentioned in the list of Indian Gingers (http:// www.gingersofindia.com). Regards, Ritesh.