Dendrocalamus barbatus var. internodiradicus - Cat's Ear Bamboo*New
This one's all about the internodes (the culm space between the nodes). The cool name indicates there's something unusual going on there, and the name doesn't lie.
As this bamboo matures, the weirdness becomes more pronounced. The taxonomic description indicates that the most notable difference between this variety and the standard form of D.barbatus is the lack of hair on the culms or oral setae on the culm sheath auricles.The culm internodes are very slightly concave in the center then step up to create pronounced nodes banded in white. They also can be slightly ventricose (zig zag).
The new culm colors are spectacular! Sourced from the South China Botanic Garden. New import. Released to us from USDA quarantine in March/2015. . Click to find your zone.