Ludwigia glandulosa from North America is a very beautiful water plant. 
It is slow growing and requires CO2 addition to grow well. Stems becomes 15-40 cm tall and 5-12 cm wide. The leaves turn greener and the lower ones may fall off if sufficient light is not provided.
Used to be sold as Ludwigia perennis.
Type: Stem
Origin : North America
Growth rate : Medium
Height: 15-30+
Light demand: Medium
C o2 demand : Medium