Identifying some plants from a parking lot

Hello everyone,

I have some plants from a parking lot that I need help identifying. I know you may not be able to identify all of them, but if you could help with any of them I would greatly appreciate it. Thank you.

Plant 1:
http://www.historyblast.com/plants/sentry/p16.JPG

Plant 2:
http://www.historyblast.com/plants/sentry/p5.JPG

Plant 3:
http://www.historyblast.com/plants/sentry/p19.JPG

Plant 4:
http://www.historyblast.com/plants/sentry/p21.JPG

Plant 5 (the algae-like stuff):
http://www.historyblast.com/plants/sentry/p25.JPG

Plant 6:
http://www.historyblast.com/plants/sentry/p32.JPG

 

#3 looks like an old dandelion, Taraxicum officinale

 

#6 is a little too much past its prime. Family Asteraceae doesn't narrow it down much.

 

#1 an old dried up grass

 

#2 probably an "aster" maybe Ionactis linariifolius

 

Thanks a lot tipularia!

If anyone knows #4 that would be great.

 

Plant 6 could almost be Sonchus oleraceus

 

number 6 could be an Erigeron

 

4 almost looks like lambs ear not really for sure.