An annotated checklist of Syzygium subgenus Sequestratum (Myrtaceae).

Lyytikäinen, Virva M. M.; Hatt, Sebastian A.; Low, Yee Wen; Burslem, David F. R. P.; Lucas, Eve J.

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. We present an annotated checklist of the 29 species comprising Syzygium subg. Sequestratum. Commonly occurring characters include glaucescence in the hypanthium, funnel-shaped flowers <10 mm long and coriaceous leaves with dark drying petioles in contrast to a paler leaf blade. 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.

BOTANICAL specimens; HABITAT selection; SYZYGIUM; PETIOLES; TREE branches

Australian Systematic Botany, 2024, Vol 37, Issue 6, p1

1030-1887

Academic Journal

10.1071/SB24006