I'm sure these are not any kind of lily.....they look very much like some type of iris (maybe a species iris) to me. PL

Were your seeds kept cold (vernalized) for a period of time? I didn't check your profile to see where you were located so I hope I didn't jump too fast in saying to put them in the ground right away. Lots of info on the web and/or a good garden center be able to steer you in the right direction. This might further help you since other than knowing what it was, the proper germination technique, especially in the sub-tropics is way out of my scope. "Many seeds germinate best at certain temperatures, some will germinate at a comparatively wide range of temperatures, yet others need fluctuating temperatures. Almost all seeds are waiting in a dormant state for some outside stimulus to break their dormancy, some just need sufficiently high ambiant humidity, others need scarification, vernalization or to be passed through the intestines of an animal. Iris domestica (belamcanda) seeds will usually germinate in 14-60 days, even under good conditions germination may be erratic. Sow Iris domestica seeds on the surface of a Well drained seed sowing mix at about 15-30ðC. Iris domestica seeds need to be "overwintered" before they will germinate. Stratification; cold treatment or vernalization. Seeds of some species need just a couple of weeks, others 3 months. Seeds can be stratified in dampened peat or sand, in a plastic box or bag at 4ðC or 5ðC in a refrigerator. The seeds should not be frozen or in a wet medium. Very small seeds can be sown on the surface of their growing medium, in pots sealed in plastic bags, and kept in the 'fridge. Many vernalized seeds need light to germinate when they are sown in the "Spring". Seed Germination Theory and Practice by Professor Norman C. Deno

Looks like it maybe an oriental. Possible Stargazer...a lovely, very common variety. How much of the foliage did you chop off? Lilies need the foliage to feed the bulbs for next year. If you chopped less than 1/3-1/2, let the remaining foliage that is there mature and then dig the bulb once the foliage has browned to the ground. Stargazer Flora

If they are rain lilies, then their flower stem will have no leaves. Some other plants with a common name of lily also have leafless flower stems, but true lilies always leaves along the stem that holds the flower. Rick