Abstract
We present an annotated checklist of the 29 species comprising Syzygium subg. Sequestratum. Species in the subgenus were identified through a comprehensive review of herbarium specimens and relevant literature, including both historic taxonomic and regional revisions of Syzygium, and recent molecular phylogenetic analyses. No single character is diagnostic of subg. Sequestratum; instead, a combination of commonly occurring characters is used, including glaucescence in the hypanthium, funnel-shaped flowers <10 mm long and coriaceous leaves with dark drying petioles in contrast to a paler lamina. Species are distributed across East Asia, Malesia and Eastern Australia, with an apparent preference for nutrient-poor habitats. This checklist provides a foundation for future taxonomic revision of this clade, from an early branching node in the tree of life of the world’s largest tropical tree genus.
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