What is "oxygyne"

Oxygyne is a genus of plant in family Burmanniaceae, first described as a genus in 1906. It has a highly disjunct distribution, found in Japan in East Asia and in Cameroon in Central Africa.

1. Oxygyne hyodoi C.Abe & Akasawa - Ehime on Shikoku Island in Japan
2. Oxygyne shinzatoi (Hatus.) C.Abe & Akasawa - Nansei-shoto (Ryukyu Islands) in Japan
3. Oxygyne triandra Schltr. - Cameroon
4. Oxygyne yamashitae Yahara & Tsukaya - Yaku-shima in Japan