Wildflowers: three stormwater basin plants

Unknown 1: upland area

Unknown 2: basin bottom (saturated), tiny, 4-parted pink to white flowers

Unknown 3. basin bottom, Cyperus squarrosus?

 

#1 - Geum sp (say, G. alepicum or G. canadense)
#2 - Epilobium sp

 

For 1, that seed in the upper right doesn't seem to match the plant from the other photographs unless I'm way off-base. I associate that seed with Bidens frondosa, and the other images with a Geum.

For 2, an Epilobium, if I am recalling correctly about the direction of the sepals.

 

Ah, are those two seeds on your finger or just one?

 

I think two, and I just realized that myself. I had thought it was a Geum...but was so confused why it had two barbs.

 

Definitely two - the dark line in the middle is actually the upper edge of the lower seed.