Helanthium bolivianum 'Quadricostatus'Previously known as Echinodorus 'Quadricostatus', Helanthium Quadricostatus from South America has characteristic light green leaves 10 15 cm long which form a good contrast to the darker aquarium plants. It is most beautiful when planted in groups, each roset becoming 15 20 cm wide. In good conditions it produces runners which spread over the bottom. Very light leaves are a sign of a shortage of micro nutrients. There is some confusion about the name