Psi. semperviva cult. tek

Nan's Nook : Archives : Misc Teks : Non Cubie Shrooms
Posted by: Millet Aug 08 03, 11:40 PM GMT
Psi. semperviva writeup by Electrolurch

All the information I have is posted here. Sorry. But as a general rule, starting from multispore on agar is the best bet, and, in your case, the only option. In addition, the print is wild, so making a syringe would be a foolish waste. Any agar formula should be fine. If you have antibiotic MEA, use it. Otherwise, go with what you have.

Psi. semperviva is known for not building sclerotia, and this was a criteria it being not a Psi. mexicana (Heim & Cailleux). I found although that it produces interesting condensation of mycellium on the sides of the petri dishes or growing containers. It look like rizomorphe growth, that was compactated inmenselly. Take a look for your self:

The most important thing about straw is to pasteurize it correctly (40 min to 1 h at 70 C). If you pasteurize at a too high temperature the straw contaminates easily. This means you have to get a good thermometer that has a range of 0 C to 110 C or so. The rest is done by nature. Many different species fruit on straw, starting with Pan cyan, going through Psi. semperviva and Psi. mexicana and ending at Pleurotus ostratos or Stropharia rugoroso-anulata. Give it a try, the worst thing is not to try...

The casing is only pasteurized. I use normal soil for plants humdified and pasteurized in the microwave at the highest power for 8 min. I let it cool down and balance the humidity to ca. 90 % of saturation. That way it can be stored for months, if not even longer...

The other one I have seen to produce extremely ryzomorphic growth is the Psi. semperviva after a while in non "eatable" environments. It produces on the sides of the trays or agar plates after a while very weird looking condensed ryzomorphic mycellia.

"what was the time to pin from casing?" Maybe 2 weeks but could also be 2.5 weeks. They don't need as long to pin, but to mature. They can take up to some weeks to drop spores. I had some that lived over a month!

"What substrates did you try?" directly on rye, straw spawned with 10 % rye, grass seed (but it got contaminated, so no info about that one)

"What temps did you fruit them at?"

They like rather lower room temps, i.e. about 20 C, they didn't like higher ones (up to 30 C), but 24 C work also great.

"Is that straw at the base of those shrooms?"

Only one has a piece of straw (the one that is obvious) the other "things" is the "ryzomorphic"/"pseudorhyza" mycellia I wrote about.

"did you try a range of substrates or just went straight to straw?"

I reserached about their naturall sourroundings, and therefore didn't even tried to use dung. Heim & Cailleux tried compost and hadn't good results. Their best results where with fermented corn straw. Therefore I went straight to straw and tried parallel rye to compare. Straw was a lot better than rye. Probably rye is a too rich substrate.

They need completelly different conditions than the Paneoli. Probably the fruitbodies would abhort if held at such conditions. I couldn't manage to grow Panaeoli & semperviva at the same time. They need VERY HIGH humidities..

after my trip to Mexico, I started with the Psi. semperviva again, and could bring them to sporulate. I made some photos for you to enjoy. They need very high humidity so that the fruitbodies develop and sporulate, I mean really high...

I use past. straw spawned with rye. The babies get really big, some of them are about 15 cm high and have a cap of ca. 6 cm. They like it really humid, er else they abhort. The ones directly on rye are much smaller.

It takes the fruitbody sometimes up to 40 days to mature. I think that is why heim & Cailleux called it semperviva (from latin). Looking at a dictionary I found: semper - Adv. semper ( = always). semper-vi-vus (= always living). Therefore I would say semper-vi-va = the always living. If the conditions are right, this fruitbodies on the photo needed "only" 3 weeks to mature...

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