Phalaenopsis zebrina var. gersenii Polychilos gersenii Phalaenopsis zebrina var. lilacina Phalaenopsis violacea var. schroderi Phalaenopsis sumatrana var. lilacina Polychilos gersenii Phalaenopsis sumatrana var. gersenii
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024