''Chisocheton macrophyllus'' in the Mahogany family (Meliaceae) is a

pachycaul Pachycauls are plants with a disproportionately thick Trunk (botany), trunk for their height, and few branches. This can be the product of exceptional primary growth (as with Arecaceae, palms and cycads) or disproportioate secondary growth as with ...

rainforest tree of the

East Indies The East Indies (or simply the Indies), is a term used in historical narratives of the Age of Discovery. The Indies refers to various lands in the East or the Eastern hemisphere, particularly the islands and mainlands found in and around t ...

and

Malay Peninsula The Malay Peninsula (Malay: ''Semenanjung Tanah Melayu'') is a peninsula in Mainland Southeast Asia. The landmass runs approximately north–south, and at its terminus, it is the southernmost point of the Asian continental mainland. The area ...

with very few upright limbs (reiterations) ultimately reaching a height of . 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 The dicotyledons, also known as dicots (or, more rarely, dicotyls), are one of the two groups into which all the flowering plants (angiosperms) were formerly divided. The name refers to one of the typical characteristics of the group: namely, t ...

) with up to 28 pairs of leaflets at any given time, each up to long by in width. Like all Chisocheton species, these leaves are

indeterminate Indeterminate may refer to: In mathematics * Indeterminate (variable), a symbol that is treated as a variable * Indeterminate system, a system of simultaneous equations that has more than one solution * Indeterminate equation, an equation that ha ...

, 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 A thyrse is a type of inflorescence in which the main axis grows indeterminately, and the subaxes (branches) have determinate growth.{{cite book , author1=Hickey, M., author2=King, C. , year=2001 , title=The Cambridge Illustrated Glossary of Bot ...

up to long, followed by pyriform capsules up to in diameter with 2 to 4 seeds each the size and shape of a brazilnut.PROSEA loc. cit.

References

macrophyllus Taxa named by George King (botanist) Flora of Malesia Flora of the Nicobar Islands Flora of Thailand Plants described in 1895 {{Meliaceae-stub