This is growing in the soil pile at work in Victoria. Stem is five-sided, hollow, slightly ridged. It kind of flops along in the other weeds. If not invasive I'll relocate some to my house :)
This is likely Fumaria reuteri, which is the more common of the two species listed in E-Flora BC. I see these regularly in my garden.
Sweet, eh? There are a few links in a thread I started for ID last year, for some that were growing at UBCBG: Tiny tubular pinky-white flowers with two red tips
