Palms, bananas, and bamboos also produce seeds, but tree ferns produce spores instead. It has several species of orchids, bamboos, ferns and other plants. In wider definitions, the taller palms, tree ferns, bananas, and bamboos are also trees. Thorny shrubs, grasses and some bamboos are present in some regions. The caterpillars feed chiefly on monocotyledonous plants such as palms, grasses, and bamboos. From the bamboos, they eat seedlings, culms and lateral shoots. Besides, the garden was enriched by collections of palms, bamboos, cacti, orchids and ornamental trees. The latter include agaves, palms, pandans, and bamboos. Dendrocalamus is a tropical Asian genus of giant clumping bamboos in the grass family. They consist of woody species from tropical regions, including some giant bamboos. There are more minor classes that include cacti, agaves, bamboos, etc. Pseudopetioles occur in some monocotyledons including bananas, palms and bamboos. Forest based products like Mahua, Kendu leaf, wood, timber and bamboos contribute local economy largely. Some other towns fortified with thorny bamboos in Qing era. Mountain soil undifferentiated is forested with bamboos found in the sea coast.