Chocolate ball ginger
Chocolate ball ginger (Zingiber macradenium) is a beehive ginger, so-called because of their shape and composition. Their form means the many little cups are great collectors of water. They probably make great drinking spots for geckos, birds and other small creatures. Probably also a great environment for breeding mosquitoes.
For more information about Hawaii Tropical Botanical Garden, go to htbg.com.