I've found some different species with that name, so if you know the latin name, you can check out the site below. Otherwise, all daisy-family seeds look quite similar. Then they are ready (dried up and ripe), they are attached to the bottoms of the individual "bits" in the "fuzzy" disc surrounded by the petals. (Sorry, too early in the morning to remember what they are called. Some exceptions, like dandelions and hawkweed.) If you pull them out, you should see little sticks attached, ranging from grey to brown to black, often with stripes running down the length. The size varies from tiny (chamomile) to large (cardoon or sunflowers), and sometimes flattish (like sunflowers or Mexican hats), but if you look at them closely, you can always see the similarities. Sometimes they have a ring of fluffy stuff attached to the tops of the seeds (like dandelions or blanket flowers). I hope this helps.

Here is a link that might be useful: Seed Site