The chives and the alliums Bill posted,
will have a bunch of little shiney black seeds
at the end of each spike in the flower
The ornamental allium that I have, is called a
walking onion or nodding onion, and the flower
is the same, but then turns under and back..
and when it forms it's seeds
, the seeds
are actually new bulbets...
When the stalk of the plant
dies, and they fall
to the top of the dirt is where a new plant
be the following year...
And there's quite a few different ornamental onion's/alliums.. oh, some of them have the prettiest colors of yellow and pink..and purple and white.. and blue!!!!