Cyc. warscewiczii is considered by many to be the same plant as Cyc. chlorochilon. It is still described in the scientific literature as a distinct separate species. The differences are that Cycnoches chlorochilon are usually 5 inch flowers, whereas, Cyc. warscewiczii are usually about 4 1/2 inches - hardly noticeable. Both are fragrant. The most noticeable difference is that Cyc. warscewiczii has one white petal, whereas, Cycnoches chlorochilon is totally yellow. The green color in the photo is because the flower just opened. It will be as bright a yellow as chlorochilon