Brent Stephenson / Greenhood orchid (Pterostylis auriculata) close up of flower, Ulva Island, Stewart Island, New Zealand, November.

Brent Stephenson / Greenhood orchid (Pterostylis auriculata) flower, Ulva Island, Stewart Island, New Zealand, November.

MYN / Corne van der Linden / Dark banded greenhood (Pterostylis sanguinea) green variant, Perth, Western Australia. August. Endemic.

MYN / Lily Kumpe / Banded Greenhood (Pterostylis vittata), Western Australia. meetyourneighbours.net project

MYN / John Tiddy / Large Rustyhood orchid (Pterostylis maxima) Illawarra forest, near Stawell, Western Victoria, Australia, November. meetyourneighbours.net project

MYN / John Tiddy / Flat rustyhood orchid (Pterostylis planulata) grows amongst the rocks on Mt Zero often in the most minimal of soil, Grampians, Victoria, Australia, October . meetyourneighbours.net project

MYN / John Tiddy / Field studio set up for photographing Tall greenhood orchid (Pterostylis melagramma) for the Meet your neighbours project, Victoria, Australia, June, 2011. meetyourneighbours.net project

MYN / John Tiddy / Tall Greenhood orchid (Pterostylis melagramma) Victoria, Australia, June. meetyourneighbours.net project

MYN / John Tiddy / Nodding greenhood orchid (Pterostylis nutans) Victoria, Australia, August. meetyourneighbours.net project

MYN / John Tiddy / Tall Greenhood orchid (Pterostylis melagramma) Victoria, Australia, June. meetyourneighbours.net project

MYN / John Tiddy / Swan Greenhood orchid (Pterostylis cycnocephala) Victoria, Australia, September. meetyourneighbours.net project

MYN / John Tiddy / Woodland Bearded Greenhood (Pterostylis sp. aff. plumosa) with spider on the dorsal sepal, Victoria, Australia, September. meetyourneighbours.net project

MYN / John Tiddy / Woodland Bearded Greenhood (Pterostylis sp. aff. plumosa) Victoria, Australia, September. meetyourneighbours.net project

Christian Ziegler / Bearded Greenhood (Pterostylis barbata) flower, western Australia

Christian Ziegler / Bearded Greenhood (Pterostylis barbata) flower in old growth oak forest, western Australia

Christian Ziegler / Frog Greenhood (Pterostylis sargentii) flower, western Australia

Christian Ziegler / Greenhood (Pterostylis sp) flowers, western Australia

Christian Ziegler / Orchid (Pterostylis nutans) flowering next to stream in eucalyptus forest south of Sydney, Australia

Neil Lucas / The very rare Bird orchid {Pterostylis barbata}, Australia

Christian Ziegler / Greenhood (Pterostylis sp) flower, Sabah, Borneo, Malaysia

Dave Watts / Grassland greenhood orchid (Pterostylis ziegeleri). Tasmania, Australia. October.

Dave Watts / Small bearded greenhood orchid (Pterostylis tasmanica). Tasmania, Australia. October.

Dave Watts / Ruddy greenhood orchid (Pterostylis squamata). Tasmania, Australia. January.

Dave Watts / Nodding greenhood orchid (Pterostylis nutans). Tasmania, Australia. September.

Dave Watts / Leafy greenhood orchid (Pterostylis cucullata) flower and rosette. Tasmania, Australia. October.

Dave Watts / Maroon greenhood orchid (Pterostylis pedunculata). Tasmania, Australia. November.

Marie Lochman / Snail orchid (Pterostylis sanguinea) Darling Range, Western Australia. Western Australian endemic

Marie Lochman / Snail orchid (Pterostylis sanguinea) Darling Range, Western Australia. Western Australian endemic