I absolutely agree Maggi. I have had the same result with Glaucidium palmatum and its white form, some germinating reasonably quickly and another "flush" the following year. Likewise from podophyllums, arisaemas and several other things, all of which have/had big seeds and frequently with Juno or Oncocyclus irises. II.palaestina (3 forms), aucheri and another which I've forgotten momentarily and it's pitch black and pouring with rain outside so I'm not going out to look, from Oron Peri, literally germinated half in 2016 and the other half in 17. One of my two Scottish grannies used to say "there's nowt so queer as folks" and while she may have been right, I'd paraphrase to say "there's nowt so queer as seeds."