here is a list of plants I found while researching goldie tanks:
1. Elodea densa, Anacharis (Mermaid’s Weed)
2. Water Sprite
3. Hygrophila difformis-(Wisteria)
4. Microsorum pteropus (Java Fern-does benefit from more acidic and warmer H2O)
5. Anubias barteri/ var. nana (standard/dwarf)
6. Bolbitis heudelotti (African/Congo Water Fern)
7. Echinodorus amazonicus (Amazon Swordplant)
8. Hydrocotyle maritima/verticillata (Pennywort)
9. Vallisneria sp.
10. Vesicularia dubyana (Java Moss-great for low light tanks and adherence to other décor)
11. Hornwort/Coontail (grows like crazy-great floating plant also)
12. Frogbit and duckweed (floating only plants-usually grazed on by fish)
I think there are more than that. I've seen some really nice pictures of planted fish tanks. Check this website out:
http://www.goldfishparadise.com/society/totm.php
Hope that helped!