Pterostylis – Greenhoods, shell orchids, bird orchids, snail orchids & jug orchid.

Pterostylis aspera complex (Shell orchids)

Flowering – May to August

There are 7 Western Australian species

  • Rosette leaves are present on non-flowering plants only.
  • Flowering plants have stem leaves.
  • Plants are found in colonies.
  • Mostly winter flowering

Green-veined shell orchid (Pterostylis scabra)

Curled-tongue shell orchid (Pterostylis rogersii) 02/07/2017

Dwarf shell orchid (Pterostylis brevichila)


Pterostylis nana complex (Snail orchids)

Flowering – May to November

There are 34 recognised Western Australian species

  • Flowering and non-flowering plants have a rosette of leaves (Exception – Robust snail orchid).
  • Labellum is not visible (Exception – Shy greenhood).
  • Narrow, thickened or clubbed lateral sepals.
  • Flowers are generally much smaller than the similar Shell orchids.

Shy greenhood (Pterostylis allantoidea)

Robust snail orchid (Pterostylis dilatata)

Slender snail orchid (Pterostylis sp. ‘crinkled leaf’) 29/07/2015

Hairy-stemmed snail orchid (Pterostylis sp. ‘inland’) 04/07/2015

Eastern granite snail orchid (Pterostylis sp. ‘miniature’)

Skinny snail orchid (Pterostylis sp. ‘skinny’) 29/07/2015

Fawn snail orchid (Pterostylis parva)

Lort river snail orchid (Pterostylis sp. ‘south-coast clubbed sepals’) 02/07/2017


Pterostylis rufa complex (Rufous greenhoods)

Flowering – August to December

There are 23 Western Australian species

  • Rosette may be withered at time of flowering.
  • Narrow ended lateral sepals, joined at the base.
  • Mostly spring flowering.
  • Multi-flowered inflorescence.

Midget greenhood (Pterostylis mutica) 20/9/2017

Striped rufous greenhood (Pterostylis sp. ‘striped’)


Pterostylis vittata complex (Banded greenhoods)

Flowering – April to October

There are 9 Western Australian species

  • Flowering plants lack rosette of leaves.
  • Short, broad lateral sepals, joined at the base.
  • Green or brown, white banded flowers.
  • Multi-flowered inflorescence.

Dark banded greenhood (Pterostylis sanguinea) 25/07/2015

Frog greenhood (Pterostylis sargentii) 20/09/2017

Banded greenhood (Pterostylis vittata) 09/06/2018


Pterostylis barbata complex (Bird orchids)

Flowering – July to November

There are 14 Western Australian species

  • No flattened rosette of leaves.
  • Feather-like, irritable labellum.
  • Long narrow lateral sepals, joined at the base.
  • Numerous stem leaves.

Bird orchid (Pterostylis barbata)

Dwarf bird orchid (Pterostylis sp. ‘dwarf’) 20/09/2017


Pterostylis recurva

Flowering – August to October

This orchid does not fit into the other Pterostylis complexes

  • Narrow ended, prominently recurved lateral sepals.
  • Flowering plants lack a rosette of leaves.
  • Numerous stem leaves, with a small dark-coloured, almost circular leaf near the base

Jug orchid (Pterostylis recurva) 19/9/2017

 

 

Author: mickyjim64

I am an avid Native Orchid fan who loves to travel around my wonderful state of Western Australia hunting down orchid species previously not seen and record them in photographs. I live on the far south east coast of the state in the beautiful town of Esperance.

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