I'm fumbling around looking for it online, but I'll bet someone's seen
It's got a fuzzy stem and red taproot, growing in full exposure in
cool, damp, mostly cloudy conditions thus far. When they were tiny I
thought they might be part of the (welcome) radish march across the
garden, but not so.
No real concern -- just wondering if this is anything useful or
interesting before I clear them away (really, before the zucchini
shade them out of existence).
Just outside Boston, for reference. But you probably figured that out