I planted 50 superbum and have had 5 germinate. I ordered the seeds from Banana Tree.
Picture and details of ENSETE superbum sub.sp. Thailand. "ROCK BANANA" Seeds and Bulbs - Tropical Plant Seed
Here is the progress:
I'm with Tog get them in some medium and see what happens. I was ordering 10 to 20 seeds at a time but have decided that from now on I'll order at least 100 due to success rates.
Good Luck
Michael