Rotala Nanjenshan

The submersed very narrow-lineal leaves of Rotala sp. "Nanjenshan" grow in whorls and are of a light green to reddish colour. They grow to a length of 1.5-2 cm and a width of 0.5-1 mm. The number of leaves per node varies from 3 to 6. The leaf tips are truncate and sometimes have two points, like in many other fine-leaved Rotala species. The stem is green. The emersed form of R. sp. "Nanjeanshan" has a creeping habit. Some of the stems also grow upwards, and there are 2 to 4 leaves per node. The emersed leaves have a very short stalk and are elliptic to lanceolate, 0.5 to 1 cm long and 2 to 4 mm wide. Emersed plants may develop small flowers with only 1 mm large light purple petals in their leaf axils.