They do look like little Hosta leaves don't they. There are no Hosta in the area and I've never tried to grow them from seed. This is the spot I planted the Crocosmia seeds on a lark and you can see a Lucifer leaf laying across the photo and looking the worse for lack of rain. I thought I at least recognized most of the weeds here but this one is unfamiliar. I'll post more pics when they've grown a bit.