These plants are so-called ``blacklisted'' because though they are sold under the guise of being true aquatic plants, they are actually land or emersed plants. Typically what happens is you buy one of these, it lives for a month, then dies. Don't buy them, unless you are setting up a paludarium and want to keep their leaves above water. The main problem with identifying all the blacklisted plants is that they are mostly known by goofy trade names which vary from region-to-region... To make things worse,
true aquatics are sometimes sold under one of these trade names as well, so it's best to know the plant's scientific name!
- umbrella pine
- ground pines/club mosses (Lycopodium)
- aluminum plant (Pilea cadairei)
- crinkle (Hemigraphis)
- green hedge
- underwater palm
- spider plant (Chlorophytum)
- Chinese evergreen
- arrowhead -- either Syngonium (the houseplant) or a species of Sagittaria that doesn't do well submerged.
- pongol sword
- sandriana, green dragon plant (Dracena sanderana) -- tall corn-like stalk, dark green sword-like leaves with white edges.
- mondo grass, fountain plant (Ophiopogon japonicus) -- Grassy, leaves in one plane.
- Japanese rush (Acorus gramineus) -- looks like mondo.
- Brazil sword, Borneo swords (Spathiphyllum sp.). S. wallisii may be suitable for submersion according to Rataj.
- scarlet hygro/dragon flame/alligator weed (Alternanthera sessilis and other sp.) -- see stem plant listing as some varieties can be grown.
- uzeto sahttp://www.topsitelists.com/out.cgi?area=bestsites&user=aquaria&nocheat=1074860058&ID=32&url=http://website.lineone.net/~chrisbotham/
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