Blyxa japonica is a stem plant actually, but the stems are so short to be covered by the head of leaves. Blyxa japonica is a beautiful green and leafy stem plant which originates in the southern regions of Asia, especially in Japan, China, and Taiwan. This plant is an obligate aquatic, preferring slow-moving, shallow streams. Blyxa japonica can be maintained without CO2 supplementation, but it often appears leggy, and individual plants can be quite thin and unattractive. This plant can tolerate a small degree of shading and will take on a dark green coloration in these conditions. Hardiness: Moderate Light Needed: Medium Plant Structure: Stem Family: Hydrocharitaceae Genus: Blyxa Region: Asia Size: Height: 6-16cm (3-7in) Growth Rate: Medium Can Be Grown Emersed: No