Bacopa australisBacopa australis was discovered in southern Brazil (australis = southern), and it does not come from Australia, as might otherwise be assumed from its name. Stems become 10 30 cm tall and 2 4 cm wide. Like the other Bacopa species, Bacopa australis is also easy to grow in an aquarium. Under certain conditions it creeps across the bottom to form an elegantly decorative light green cushion. When Bacopa australis grows in a good light, the leaves become