On Wed Dec 29 19:59:23 PST 2010, pjhugs said:
Not sure which you're missing, so here are all of them plus combos to make them. There are other possible combos to make them.
Fourpetal Maple--Citrus Ball Cactus and Jalapa Maranta
Rosaceae Fern--Jalapa Maranta and Bluestar Astera
Fabled Lemonbush--Jalapa Maranta and Fragrant Maple
Nox Orchid--Spotted Reptans and Rosaceae Fern
Mela Rare Oak--Citrus Ball Cactus and Venomous Lemonbush
Aureus Scandens--Fourpetal Reptans and Venomous Grass
Hope this helps you find the last plant you need.