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The Orchidoideae , or the orchidoid orchids, are a subfamily of the orchid family (Orchidaceae).
They typically contain the orchids with a single ( = monandrous), fertile anther which is erect and basitonic.( = producing no leaves below the inflorescence).
The subfamily Orchidoideae and the previously recognized subfamily Spiranthoideae are considered the closest allies in the natural group of the monandrous orchids because of
The Orchidoideae contain two subclades with the following tribes :
- tribes Orchideae and Diseae
- tribes Cranichideae and Diurideae
The former subfamily Spiranthoideae is now embedded as tribe Cranichideae in the clade of the Orchideoideae. It is sister to the tribe Diurideae.
The tribe Orchideae consists of the following subtribes:
The tribe Diseae consists of the following subtribes:
The polyphyletic tribe Cranichideae consists of the following monophyletic subtribes :
- Cranichidinae
- Goodyerinae
- Pachyplectroninae
- Prescottiinae
- Spiranthinae
The tribe Diurideae consists of the following subtribes :
- Pterostylidinae (polyphyletic)
- Chloraeinae (polyphyletic)
- Acianthinae (monophyleric)
- Caladeniinae (polyphyletic)
- Cryptostylidinae (monophyletic)
- Diuridinae (monophyletic)
- Drakaeinae (monophyletic)
- Prasophyllinae (monophyletic)
- Thelymitrinae (monophyletic)
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