Diplodium grandiflorum (syn Pterostylis grandiflora)
I don't know if there are many people on this list at all interested in Australian terrestrial orchids but I thought I'd post this for something different. This species is probably my favourite of the cauline greenhoods. I been growing it for just under a year so I can't comment much of cultivation. Not a great flowering but my autumn flowering greenhoods have put on such an appalling display this year that I'm just happy this one decided to throw up some flowers. Summer was quite hot and dry in Melbourne which resulted in the terrestrials shooting late at the expense of the flowers. Fortunately the donkey and sun orchids seem to be growing well so there's hope for spring.
Andrew