Category Archives: viriosa

Between the rain

Yesterday morning, I took the opportunity to go orchid hunting, as it will be raining for the next few days.  Fortunately while I was out there, the weather was rather forgiving, but there was a very light shower.  The birds seemed to be enjoying themselves, but were too fast for me to capture.

water

I really love it how these Linguella nana’s (syn. Pterostylis nana) are having a conversation.  They were the first flowers I found of this species, after having seen plenty of leaves and buds.

Linguella nana

I always find it interesting the height difference of Urochilus sanguineus (syn Pterostylis sanguinea).  I am fascinated by the height difference that can be found at one site, though the actual flower size is the same.  These look amazing with the sun coming through the flowers, but this time the sun was hiding.

Urochilus sanguineus

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I also saw the Bunochilus viriosus (syn P. viriosa), which is often found growing along side the Urochilus sanguineus.

Bunochilus viriosous

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Robust

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.

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