For bamboo identification you need to show:
1. The basal bracts (where the culm emerges from the soil)
2. Note whether it is rhizomatous or not
3. Show the 'cane' - taking care to depict if it has a groove, if it is entire, and also what the cane looks like where it braches
4. The fully expanded leaves
5. Note the height
From this image I cannot work out what bamboo this.