Symplocarpus foetidus (closer to bulbous than cardamine)
Brian Whyer (Mon, 08 Apr 2013 06:06:40 PDT)

< But I'll join in the fun: aren't there species of Cardamine which are "bulbous" in the sense of having spheroid underground storage
< organs? Isn't there a Cardamine bulbosa? Wasn't one of the toothworts once called Cardamine bulbifera?

Cardamine bulbifera is an introduced weed in my garden, no matter how often I pull it up each year and collect and destroy all the stem bulbils. It grows in  the local woods with Bluebells. Quite attractive in a woodland setting, like Anemone canadensis, introduce them and they spread all over.

Brian Whyer, Buckinghamshire, England, zone ~8 ish. First day in double figures C for many weeks.