High in the humid canopy of Sundaland's ancient dipterocarp forests, a resilient tree stands as a testament to the rich biodiversity of Southeast Asia. This species, known as Simaba borneensis, plays a quiet but vital role in the complex lowland ecosystems of Borneo and Sumatra.
Originally described under a different genus in the mid-20th century, the plant has fascinated botanists tracing the evolutionary pathways of the Simaroubaceae family. Its presence in specialized acidic kerangas forests highlights its remarkable ecological adaptability.
Simaba borneensis typically develops into a substantial tree reaching heights of up to 25 meters, supported by a trunk diameter of approximately 25 centimeters and sturdy buttresses. Its foliage consists of oblong, obovate, or elliptic leaves that measure up to 12 centimeters in length and 4.5 centimeters in width.
The reproductive structures feature puberulous inflorescences that give rise to ellipsoid fruits. These distinctive fruits turn a vibrant purplish-red color at maturity and can reach up to 3 centimeters in diameter.
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