Non-Reef: FW Plants ID please!

[gimincorp]

Hi,
I have two plants that I need to identify.
One (top left) has small individual plants floating with roots down.
Two (furry ball like to the right) has many intertwined "leaves" and no roots.

I suspect One is duckweed, but not sure...
Both are availlable for exchange/purchase from my desease-free tank.

 

[Killerdrgn]

the floating stuff should definitely be pond lettuce. not sure about the furry ball one. duckweed leaves tends to stay small, like a grain of cooked rice.