There are two main types of bamboo: sympodial and monopodial. Sympodial bamboo grows in clumps and produces culms faster, while monopodial bamboo spreads via underground rhizomes. Over 67% of bamboo in India is sympodial, including the dominant species Dendrocalamus strictus. Common sympodial species form clumps with younger culms on the outside and older ones in the center.