FIGURE 6. Pteroceras viridiflorum (Thwaites) Holttum (alcoholic specimen), A. Close-up of flower, B. Flower–front view of a spreadout specimen. C-J. Dissected flower; C. Bract, D. Dorsal sepal, E. Petal, F. Lateral sepal, G. Vertical dissection of hollowed spur-like showing fine hairs on the inner wall, H. Lip with spur and column, I. Side-view of labellum showing foot, column and spur, J. Column showing stigma and pollinarium inside the anther cap, K. Operculum, L. Pollinarium. Photo credit to Tharaka S. Priyadarshana.

Published as part of Priyadarshana, Tharaka S., Atthanagoda, Anusha G., Wijewardhane, Ishara H., Siriweera, Kawshalya S., Aberathna, Nimantha & Kumar, Pankaj, 2019, Pteroceras dalaputtuwa (Orchidaceae: Epidendroideae: Vandeae: Aeridinae), a new species from Sri Lanka and re-collection of Pteroceras viridiflorum after 150 years, pp. 65-76 in Phytotaxa 399 (1) on page 74, DOI: 10.11646/phytotaxa.399.1.7, http://zenodo.org/record/13713071