Apostasioideae

In plant systematics Apostasioideae is one of the five subfamilies recognised within the orchid family, Orchidaceae.wikipedia
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Orchidaceae

orchidorchidsorchid family
In plant systematics Apostasioideae is one of the five subfamilies recognised within the orchid family, Orchidaceae.
In the primitive Apostasioideae, this fusion is only partial; in the Vanilloideae, it is more deep; in Orchidoideae and Epidendroideae, it is total.

Apostasia (plant)

ApostasiaApostasia'' (plant)
Only two genera, Neuwiedia and Apostasia, and 15 species, are recognised within the Apostasioideae in contrast to the other orchid subfamilies which are highly species rich.
The two genera in the subfamily Apostasioideae, Apostasia and Neuwiedia, differ from most other orchids in having three stamens.

Neuwiedia

Only two genera, Neuwiedia and Apostasia, and 15 species, are recognised within the Apostasioideae in contrast to the other orchid subfamilies which are highly species rich.

Monandrous

monandry
All other orchid subfamilies with the exception of the Cypripedioideae are monandrous (possessing a single stamen), however Apostasioid orchids have 3 stamens.
The other subfamilies, Apostasioideae and Cypripedioideae, have at least two stamens.

History of plant systematics

plant systematicsplant classificationtaxonomic history
In plant systematics Apostasioideae is one of the five subfamilies recognised within the orchid family, Orchidaceae.

Genus

generageneric namegeneric
Only two genera, Neuwiedia and Apostasia, and 15 species, are recognised within the Apostasioideae in contrast to the other orchid subfamilies which are highly species rich.

Species

specificspecific epithetspecific name
Only two genera, Neuwiedia and Apostasia, and 15 species, are recognised within the Apostasioideae in contrast to the other orchid subfamilies which are highly species rich.

Cypripedioideae

lady's slipperslipper orchidlady's slipper orchid
All other orchid subfamilies with the exception of the Cypripedioideae are monandrous (possessing a single stamen), however Apostasioid orchids have 3 stamens.

Stamen

antheranthersstamens
All other orchid subfamilies with the exception of the Cypripedioideae are monandrous (possessing a single stamen), however Apostasioid orchids have 3 stamens.

Neontology

extantlivingextant species
As with all basal or 'primitive' groups, extant species within Apostasioideae do not represent direct ancestors of the other subfamilies, they simply share the same common ancestor.

List of Orchidaceae genera

List of natural Orchidaceae generaAcerasGastrodiae Rhizoma

Taxonomy of the Orchidaceae

Taxonomy of the orchid familyOerstedellaorchid taxonomy
The other subfamilies, Apostasioideae and Cypripedioideae, have either three stamens or two stamens and a staminode.

Vanilla polylepis

However, more recent work has placed it within in its own subfamily Vanilloideae, possibly the most ancient orchid lineage (apart from Apostasioideae).