Bulbophyllum guamense
Bulbophyllum guamense is a species of orchid in the genus Bulbophyllum. It is native to the islands of Guam and Rota in the Mariana Islands.

See also 
List of endemic plants in the Mariana Islands

References

The Bulbophyllum Checklist
The Internet Orchid Species Photo Encyclopedia

guamense
Flora of the Mariana Islands
Plants described in 1914