Fig. 4. Hoya sumatrana S in Hoya of Sumatra, an updated checklist, three new species, and a new subspecies

Fig. 4. Hoya sumatrana S.Rahayu & Rodda sp. nov. A–B. Leaves from above. C–D. Leaves from from underneath. Photos: M. Rodda.Published as part of Rahayu, Sri & Rodda, Michele, 2019, Hoya of Sumatra, an updated checklist, three new species, and a new subspecies, pp. 1-23 in European Journal of Taxonomy 508 on page 17, DOI: 10.5852/ejt.2019.508, http://zenodo.org/record/261287