Shorea subsect. Mutica
Content
Description
Bark surface early becoming deeply and persistently V-section fissured, only rotting off in very large trees.
Notes
Species of this subsection are, with the exception of S. scabrida and S. retusa easy to identify. Many are widespread and morphologically remarkably uniform. S. parvifolia, which is usually variable for the subsection, and consists of at least two ecotypically and partially geographically separate forms is linked with several sibling species endemic in Borneo (S. rubra, S.foraminifera, S. scabrida, S. retusa, S. revoluta); it is known to be partially apomictic through adventive polyembryony (Maury). Hybridization is known among some species but is exceptionally rare. All species are thrip pollinated, and sympatric species flower sequentially (Chan, H. T.).