Hi Aiko,
Attila Kapitany is very knowledgeable about Australian succulents.
Unfortunately, I don't think it's easy to find someone have the seeds, not only Pyrorchis nigricans, also other Australian terrestrial orchids.
Where I live, we have about 12 species of terrestrial orchids around our property. They grow from underground tubers (quite small, about Ø5mm - Ø10mm, sometime I wondering how they can survive with long period of drought), about 3-5cm under the surface. They only show themselves for few weeks each year, some of them not every year, it depends on the weather and other environmental conditions.
There are only a few species MIGHT be available for sell as tubers, not seeds. That also very few special nursery have them. It's only recently that scientists managed to propagate some of the endangered species.
Sometime, if I dug out some tubers in the backyard when I was doing some earthwork, I put them into a shallow pot, they'll flower most of the years during earlier spring.
Pyrorchis nigricans is a terrestrial orchid. It supposed to be around our property too, but I haven't seen any yet.
If I'm not mistaken, they only flower after fire from previous summer. We haven't have bush fire around our place for over 50 years, hopefully not in near future.
Attached some photos of the terrestrial orchids I found in our property last 2 months. (Being quite busy, haven't had time to check last few weeks.)
The 2nd photo, Caldenia villosissima, this is the first time I saw them in 4 years. Even the 7th photo, Calochilus robertsonii, I didn't see them the previous 2 years.
- Caladenia carnea.JPG (113.36 KiB) Viewed 4005 times
- Caladenia villosissima 01.JPG (127.44 KiB) Viewed 4005 times
- Cyanicula caerulea - Blue Fingers.JPG (96.93 KiB) Viewed 4005 times
- Diuris pardina (Leopard Orchid) 01.jpg (118.74 KiB) Viewed 4005 times
- Dwarf Greenhood - Pterostylis nana 01.JPG (103.12 KiB) Viewed 4005 times
- Glossodia major 01.JPG (131.01 KiB) Viewed 4005 times
- Purple Beard-orchid Calochilus robertsonii 22102401.JPG (135.32 KiB) Viewed 4005 times
- Rabbit Ears Sun-orchid Thelymitra antennifera 22102404.JPG (104.45 KiB) Viewed 4005 times