Hoya ruthiae photographed from Rodda M. MR606 (SING) prior to pressing A Flower, lateral view with two corolla lobes removed B Corolla, underneath C Corolla and corona, top view D Corona, underneath E Pedicel, calyx and ovaries F Pollinarium with twin pollinia. (Photographs by M. Rodda)

  Part of: Rodda M (2015) Two new species of Hoya R.Br. (Apocynaceae, Asclepiadoideae) from Borneo. PhytoKeys 53: 83-93. https://doi.org/10.3897/phytokeys.53.5079