High in the dense canopy of Southeast Asian rainforests, a towering giant breathes life into the ecosystem with its soaring crown and winged seeds. This impressive species is Ailanthus integrifolia, a tree whose presence defines the upper layers of humid tropical forests from India to the Solomon Islands.
Historically known to local communities for its light yet sturdy timber, it is a vital part of the regional biodiversity. The species thrives in low-to-mid elevation zones, adapting seamlessly to the challenges of wet, humid climates.
Its common name, White Siris, reflects the pale coloration of its wood and bark. Today, it remains a symbol of undisturbed primary forests, harboring numerous canopy-dwelling organisms.
The majestic silhouette of Ailanthus integrifolia is characterized by a straight, cylindrical trunk that can exceed 1 to 2 meters in diameter. Standing at heights of up to 45 meters, this tree features a smooth, light greyish-brown bark.
Its large, compound leaves are arranged alternately along the branches, often measuring up to 90 centimeters in length. The leaflets are asymmetrical at the base, having completely smooth or entire margins which distinguish them from related species.
During the blooming period, the tree produces small, yellowish-green flowers clustered in large panicles. The reproductive and dispersal mechanisms include:
The economic value of Ailanthus integrifolia lies primarily in its lightweight, easily workable wood. It is commonly utilized in the manufacturing of matchwood, packing boxes, and paper pulp.
Additionally, local communities utilize the species in traditional medicine and daily life:
Interestingly, Ailanthus integrifolia is highly resilient and is classified as Least Concern on the IUCN Red List. It thrives at elevations up to 900 meters above sea level, indicating its high adaptability to varying forest terrains.
Here are several intriguing facts about this species:
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Taxon Synonyms: Dysoxylum dasyphyllum, Ailanthus peekelii, Ailanthus integrifolia subsp. integrifolia
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