I am trying to build a collection of Roscoea, and would offer to purchase seed of good plants, Seeds from any of the following cultivars are on my list:
Roscoea cautleyoides: Kew Beauty, Jeffrey Thomas, Purple King
Roscoea humeana: alba, McBeath's Pink, any good purple form
Roscoea purpurea: Brown Peacock, Red Gurkha, Royal Purple, Wisley Amethyst
Roscoea wardii.