Chisocheton macrophyllus

Chisocheton macrophyllus in the Mahogany family (Meliaceae) is a pachycaul rainforest tree of the East Indies and Malay Peninsula with very few upright limbs (reiterations) ultimately reaching a height of 115 ft. Each reiteration is topped by a tight rosette of once-pinnate leaves up to ten feet (three meters) in length (the longest once-pinnate leaves of any dicot) with up to 28 pairs of leaflets at any given time, each up to 15.5 in long by 4.5 in in width. Like all Chisocheton species, these leaves are indeterminate, forming a new pair of leaflets every few weeks or months. while the oldest pair may die. The cream-colored flowers, 1.5 inches (4 cm ) long with 4 or 5 petals, are arranged in a thyrse up to 32 in long, followed by pyriform capsules up to 6 in in diameter with 2 to 4 seeds each the size and shape of a brazilnut.