1) Genus pterostylis 2) Liliopsid genus 3) Monocot genus 
Pterostylis is a terrestrial deciduous genus of some 200 or so species of orchids found in central and eastern Indonesia, New Zealand, Australia, New Guinea and New Caledonia. The common name of this orchid is Greenhood - a number of species have green flowers with the dorsal sepal forming a `hood` over the rest of the flower. The name Pterostyl.....
[n] - genus of terrestrial orchids of Australia and New Zealand and western Pacific
genus Pterostylis noun genus of terrestrial orchids of Australia and New Zealand and western Pacific