Echinodorus cordifolius? ?Tropica Marble Queen?
A cultivar obtained from the population of E. cordifolius at Tropica Nursery in Denmark. The leaves are heart shaped, but conspicuous by the presence of yellow blotches on green leaf laminae, hence a marbled appearance. This plant demands high light to maintain the unique leaf characteristics. A very good choice for paludariums as it can grow well in semi-submerged conditions.