Ridsdalea backanensis A mature tree in natural habitat B part of crown with two main trunks C trunk of mature tree D bark at DBH E flowering and fruiting branches F, G ripe fruits H ripe fruits, sagittal section I ripe fruit, cross section J fruit, sagittal section, seeds removed K ripe seeds. Photos by C.H. Nguyen (A–E) and L. Averyanov (F–K) from plant used for preparation of the paratype voucher specimens (AL 1680), photo-correction, and design by L. Averyanov and T. Maisak.