Join Date: Mar 2004
Location: S.F. Bay Area, CA, USA
Hygro. polysperma (and all of its variants) are illegal to sell or import in all of the U.S., I think. Not that people bother to adhere to this law... In California, there's also a ban on Bacopa monnieri (moneywort) but I always see the stuff being sold at P*tco. Water sprite - Ceratopteris thalictroides is illegal, but C. siliquosa is permitted. Cabomba caroliniana is illegal, but the other species are okay, I believe. And although I've never seen Hydrilla, my understanding is that it's illegal, too.
It wouldn't surprise me if Phyllanthus were illegal to import. I think there is a similar law that applies to water hyacinth (Eichhornia crassipes?) - it can be sold within the state, but it can't be shipped into California from outside.
There are also bans on Pomacea canaliculata (apple snail), and possibly bridgesii ("mystery" snail) as well. There *should* be a ban on Colombian ramshorns (Marisa cornuarietis) if there's one on the other two snails, but I see them being sold all the time. Anything that could potentially wreak havoc on California's agriculture...
I know that Albany Aquarium adheres to these laws very strictly. The owner works closely with the California Department of Agriculture. They have to inspect his plant shipments (and now, apparently, the plants have to go through a second inspection with Alameda County) so he's very careful about what he orders. If you want to know the status of a particular plant, you can probably find out from them.