Need help to name an invasive bulb

This little guy has been in my landscape for years. I'm not asking for help in control; I'm already doing everything but removing the first two feet of soil from my entire yard. I'm resigned to control at this point, not eradication. But I'd like to place a name to my adversary. Any help you can provide would be appreciated. Propagation is by bulblets and seed. The leaf can be as long as 18", somewhat fleshy, somewhat prostrate, light green, usually curling near the end, with a prominent ridge on the midvein. Flowers come up around this time (mid to late April) and go quickly to seed. I usually catch them before they seed, but the tiny bulblets are killer to find and remove. I'm thinking some kind of Ornithogalum, but haven't found one that looks like this.

KC in Costa Mesa

http://www.missouriplants.com/Whitealt/Ornithogalum_umbellatum_page.html

Could be this one which I haven't tried as it is known to be invasive. Ornithogalum umbellatum

It doesn't look like an ornithogalum. My guess is that it is Nothoscordum gracile (aka N. inodorum or N. fragrans).

Ispahan, I agree after looking at this.

http://www.pacificbulbsociety.org/pbswiki/index.php/Nothoscordum

Thanks so much for your replies! It looks very much like Nothordum gracile. Now when I point it out, I can put a name to it. Thanks again.