Peren, I didn't find anything in that family that seemed to fit, so I guess that I'll look for flowering plants later in the season. Thanks.

Any particular scent that you noticed? It makes me think Apiaceae (Umbelliferae).

(and I think it's the mark of a true plant nerd that you notice the turf weeds on the golf course!) ;>)

NHBabs, I didn't check for scent, but thought they were similar to Chaerophyllum in the shape of the leaves. However, the young Chaerophyllum plants that I've seen, to date, had a less dense basal rosette with more upright leaves.

Thanks for the plant nerd comment. When plants go away in the winter months, I gravitate to gathering places (churches, golf courses, schools, parks, vacant lots, parking lots, etc.) to stave off boredom. Those places are usually warmer than the surrounding country sites, and also have some rare plants that are transported there by muddy tires, etc. I should mention that I only check school grounds on Sundays. School officials get way too nervous if I show up on a weekday with binoculars. As an aside, I 'm thinking of making an action movie called "Urban Botanist", but can't seem to interest anybody in the starring role. ;-)

I think that you would be perfect in the starring role.

Me too, Betsy!

I'm thinking Apiaceae too.

Thanks for the comments. I've located lots of plants, so will follow up in a month or two when there are flowers. The ID will be simple to make then.

Follow-up - these plants are in flower now. They have 3 rays per inflorescence, and the relatively broad bracts that are typical for Chaerophyllum. Although they are much more hairy than expected for the species, they clearly key to Chaerophyllum procumbens.