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. The genus is composed by six species which are all mycoheterotrophic, are devoid of functional leaves and do not photosynthesise. Species
 Oxygyne hyodoi C.Abe & Akasawa - Ehime on Shikoku Island in Japan
 Oxygyne shinzatoi (Hatus.) C.Abe & Akasawa - Nansei-shoto (Ryukyu Islands) in Japan
 Oxygyne triandra Schltr. - Cameroon 
 Oxygyne yamashitae Yahara & Tsukaya - Yaku-shima in Japan

References

Dioscoreales genera
Burmanniaceae
Parasitic plants
Taxonomy articles created by Polbot