Ok, now that I see what this is, I have done some research:
Bad news (sort of bad news, anyways):
1. This spreads by spores, but takes STAGES. spermogonia and aecia are the two stages. From
If you see this, discard the plant immediately!!!!!!!!! I think spermogonia is the budding/fruiting process and aecia is when it is growing.
2. This fungus mainly buds and fruits at autumn and winter.
3. It can affect/infect pretty much all of Crassulaceae so if it's infected, quarantine all nearby plants in a place SUPER away from any of your other succulent friends such as Echeveria or Crassula.
4. Too many plants to check??? This fungus mainly attacks: Sempervivum arachnoideum, calcareum, montanum, tectorum, wulfenii and rollers.
5. Apparently only leaves in early summer are affected. I don't know why though.
5. Mainly in Serbia and Romania and Italy. Or just mainly Europe right now.
6. This fungus WILL and CAN kill your Sempervivum.
7. According to researchgate.net, symptoms include "deformation or withering of the rosette, slightly protruding pustules (sori) covered with epidermal cells, and elongation of leaves". Basically:
- Withering rosettes, aka. rosettes dieing for no apparent reason
- Bumps that look like cones or just overall bumps.
- Weird elongated leaves that don't look natural (Aka. other plants in similar area don't have this problem)
8. This is a pathogen… yea…
9. It's spores are bright orangish or rusty red. Sometimes golden.
Easy to detect - Weird cones? Bright colored mini-volcano looking things? Weird elongation?
Fungicide MAY work!
Is not a widespread pandemic YET.
Please keep an eye on the sempervivum!!!!! I dont want anyone to have a big infection!!!!1111!!1!!11
Im going to keep digging later when I have time