On the Reproductive Biology of a Canopy Tree, Syzygium syzygioides (Myrtaceae), in a Rain Forest in Sulawesi, Indonesia

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Abstract
S syzygioides is a self-incompatible canopy tree, common in the lowlands of Sulawesi, which produces a mass of small (.apprx. 5 mm across) flowers from mid-Feb. to mid-March 1980. These are visited sparingly by a wide variety of short-tongued insects which collected the quite concentrated nectar. Fruits, small whitish fleshy drupes, are produced by the end of March, but no animal was recorded feeding on them either on or beneath the trees. All the individuals in 1 ha of forest were mapped showing that the abundant seedlings are clumped on the forest floor and that there are fewer seedlings within 10 m of a flowering adult than further away. The results are perhaps typical of a species-poor island situation such as Sulawesi, and different results may be expected from an area such as Borneo where S. syzygioides also occurs.

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