When we think of bulbs for the garden, the plants we have in mind are almost all monocots. In that respect, this plant shown above is an anomaly: it's a dicot. There are a few other dicots familiar in the bulb trade, cyclamen and oxalis for instance, but they are a small minority. And strictly speaking, corydalis and cyclamen do not grow from true bulbs (but some oxalis do).
Corydalis ( ko-RĬ-da-lis) is related to bleeding heart, dutchman's britches, squirrel corn and, more remotely, to poppies. They are, at best, a fleeting presence in the garden: the blooming period is short, and the plant soon after disappears under ground for the rest of the year.
The genus Corydalis offers the grower a wide range of challanges: some of them are weed easy, some are best enjoyed in books. The one shown above is one of the easy ones.