Bunochilus viriosus – Adelaide Hills banded Greenhood or Tall Greenhood
This orchid used to be part of the Pterostylis family, and is commonly found with Urochilus sanguenea. Like U. sanguenea, the plant will produce either a flowering stem or a leaf. This genus is fairly common with species been found right across Australia. Interestingly nearly every state has some species which are endemic to their state.
Its name viriosus means it is strong or robust. It is found from the Mount Lofty Ranges across to Eyre Peninsula, and it can have some variation. It flowers between June and early September.
Generally these plants are have several flowers on a single stem. The plants with the most flowers tend to be older plants, and would have not flowered the previous year. A feature of these flowers is a labellum which, upon touch, will move upwards trapping the pollinator. While the pollinator struggles to free itself from the orchid, it will pollinate the flower.
Similarly to U. sanguenea, this orchid will also produce short and tall plants at the same site. It has been observed for this species to reach over a foot high.