Bunochilus umbrinus
Broad-sepaled Leafy Greenhood at suppressed
Identify this sighting
| Bunochilus umbrinus | MattM | 30 Aug 2021 | |
| Bunochilus umbrinus | NedJohnston | 29 Aug 2021 |
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User's notes
On one plant all of the flower heads were missing the orange and black thing in the middle. Not sure if this is just a developing plant or whether it formed unusually.
3 comments
30 Aug 2021
The labellum is sensitive to vibrations and will flick up to force the pollinator against the pollinia as it tries to leave. You can see it in the first image. It's likely the labellum was triggered by a gust of wind or when you touched it. They are surprisingly sensitive.
30 Aug 2021
I believe it's a trait shared by all greenhoods. Off the top of my head I can't think of any other orchid species with a mechanism that responds to stimulus like that, but hammer the labellum of hammer orchids rocks back and forth as male flower wasps attempt to fly away and mate with the labellum (mistaken for the female). There are a couple of videos on YouTube showing the hammer orchid in action if you are curious about them.
Sighting information
- 1 Abundance
- NedJohnston Recorded by
- 10cm to 30cm Plant height
- Yes In flower
Collections
- NedJohnston Canberra & Southern Tablelands NatureMapr Bunochilus umbrinus (ACT) = Pterostylis umbrina (NSW) Orchids Plants
Species information
- Bunochilus umbrinus Scientific name
- Broad-sepaled Leafy Greenhood Common name
- Highly Sensitive
- Rare or uncommon native
- Non-invasive or negligible
- External link More information
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Synonyms
Pterostylis umbrina
Seasonal activity
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In flower
JFMAMJJASOND
Record quality
Quality score
7 / 7
- Images or audio
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
- Description
- Additional attributes