I was out walking in near the potapsco river today in Maryland and saw some interesting plants. The first was a ground cover plant that was both on land, emerged and submerged in a stream. The later got me interested since this plant appears to be a pretty dense ground cover on land so I am interested to know if it can be grown in the aquarium as a ground cover. Here are some pictures of the plant on land, in water, and later flowering on land:
The other is what I think is a moss. I doubt I have enough here to identify but basically what I wanted to know is if this is a moss or algae. I don't even know enough about terms to be able to properly describe it, but I see what looked almost like a central stem, so I thought it couldn't be an algae, but before I try propagating it I wanted a second opinion.
Here it is in the water and then I smeared some on some rocks and in my hand:
Thank you guys for any help!