I have an allium growing that seems to have characteristics of both onions and garlic. Planted from seed that I got from a friend, but not sure what they are, and he never planted his.

Leaves are flat like a garlic, up to a cm across.
Seed heads are like an onion.
No scapes are present.
Bulbs are small (like a wild onion type bulb).

Right now they are going to seed, so I don't have a great picture that I can post of when they were at the prime state.