Need help id'ing plants

[WhataMack]

Hi, all. There are four plants in my 55G (intro thread of the tank is here) that I've been unable to identify, so was hoping some of you could help. Thanks in advance!

Unknown bunch #1


Unknown rosette #1 (leaves are variegated...kind of hard to see that here)


Unknown stem #1


Unknown stem #2

[Camil]

Tho of them I know for sure:
-unknown rosette "Tropica marble queen" a hybrid variety of echinodorus, however without at least 2,5 Watt/liter it will soon lose it's complexion. If you give it plenty of light and some good fertilizer (it is a root feeder so no liquid fertilizers required) it's going to be something special (don't let oxigen run near it unless you want holes in the leaves)
-unknown stem 2 "Hygrophila polisperma" very hardy not demanding. I threw it away because it's fast growing pace
-unknown bunch IT'S ONLY A GUESS might be some sort of Cabomba or Myriophilum Tuberculatum (either way this plant needs liquid fertilizer).
-unknown stem 2 There is a good chance that this plant is Cabomba Pyaeutyensis (not in peak condition). If it is so, I can tell you that I gave up trying a long time ago. It needs huge amounts of light, I had 2,75 wats per liter and only the very top of the plant turned red, it also needs a fair share of liquid fertilizer and co2. If you can't provide those things it's not going to be somethig special

[steve bloom]

Unknown stem 1 looks alot like my Hornwort. It grows fast, and I killed a bunch of it fast too.

Unknown stem 2 is definitely Hygro. Mine is growing really fast as well.

steve

[off-ice]

Unknown bunch 1 is Mayaca fluviatilis
Unknown rosette 1 is Echinodorus cordifolius 'Tropica Marble Queen'
Unknown stem 1 is Ceratophyllum submersum
Unknown stem 2 looks to be Hygrophila polysperma 'Rosanervig', though not in the best of shape. It appears in that picture it has white veins, which regular polysperma does not get.

[WhataMack]

Great, thanks very much for all the quick replies!