Monadenia

Lindley ,Gen. and Sp. Orch . Pl . (1840) , 486.

Erythrodeae .VI , IX . Gr. monos (only) , meros (part) . In reference to the apparent incompleteness of the perianth : " This is the only known genus .....in which the petals are abortive . Nothing is found in their room , but there is a wide tooth-letted interval between the upper and lower sepals."