Diplodium decurvum
1 Summer greenhood at Cotter River, ACT
Identify this sighting
| Diplodium decurvum | CathB | 1 Feb 2021 | |
| Diplodium aestivum | shoko | 27 Jan 2021 |
Please Login or Register to identify this sighting.
8 comments
29 Jan 2021
Or possibly D. decurvum? The labellum doesn't look very curved and the base of the flower is fairly straight, not bulging.
29 Jan 2021
Thanks for your suggestion Cath. I thought that the flowers were much bigger than the usual decurvum, I should've taken a photo with a size indicator. But your observation on the base of the flower and labellum do fit with decurvum. Are they known to form small colonies? There were about eight plants in the one patch, two in another. I've only seen them solitary previously.
29 Jan 2021
Hi Shoko. Orchids of the ACT mentions decurvum growing in small groups and Wild Orchids of Victoria talks about extensive colonies! I can't comment on the size, but perhaps plants might grow a bit larger in this season's mild and wetter conditions?
29 Jan 2021
Yes perhaps some would be larger with a favourable season. I'm happy with your suggestion Cath, thanks!
29 Jan 2021
They seem to form much smaller flowering colonies than the other greenhoods, but I have seen a few colonies with several flowering plants.
29 Jan 2021
Thanks for your comment Matt, I guess I've seen my first colony of happy decurvums now :)
1 Feb 2021
I believe these are D. decurvum as the labellum is not prominent or curved enough for D. aestivum. I am seeing considerable size difference in this species this year. Some quite tall with others much shorter.
1 Feb 2021
Thanks for your comments Derek, good to know you've been seeing variation in size with this species.
Location information
- Maps Namadgi National Park
- Places Cotter River, ACT
Sighting information
- 4 - 15 Abundance
- shoko Recorded by
Collections
Species information
- Diplodium decurvum Scientific name
- Summer greenhood Common name
- Sensitive
- Local native
- Non-invasive or negligible
- Up to 1659.69m Recorded at altitude
- External link More information
-
Synonyms
Diplodium decurvum Pterostylis decurva
Seasonal activity
-
In flower
JFMAMJJASOND
Record quality
Quality score
3 / 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