Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2019-03-25
Page range: 65–76
Abstract views: 17
PDF downloaded: 1

Pteroceras dalaputtuwa (Orchidaceae: Epidendroideae: Vandeae: Aeridinae), a new species from Sri Lanka and re-collection of Pteroceras viridiflorum after 150 years

Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning, People’s Republic of China
Youth Exploration Society of Sri Lanka, Royal botanical garden, Peradeniya, Sri Lanka
Sri Lanka School of Agriculture, Department of Agriculture, Karapincha, Kuruwita, Sri Lanka
267/b/40 Morawakawatta, Pahala Bomiriya, Kaduwela, Sri Lanka
Youth Exploration Society of Sri Lanka, Royal botanical garden, Peradeniya, Sri Lanka
Kadoorie Farm and Botanic Garden (KFBG) Corporation, Lam Kam Road, Lam Tsuen, Tai Po, New Territories, Hong Kong S.A.R., People’s Republic of China
conservation epitype lectotype orchid tusker wet zone Monocots


Pteroceras dalaputtuwa, a new species, is described from the lowland-wet zone of Sri Lanka. For the first time in the history of plant nomenclature, a new species is named after an elephant, ‘Galgamuwa Dala Puttuwa’, which was killed for its majestic ivory. The new species shows a close morphological affinity with P. philippinense from the Philippines. However, P. dalaputtuwa sp. nov. can be readily distinguished by having small and partially opened flowers (10 mm long × 5 mm wide), short petals (4 mm long × 1 mm wide), short sepals (4.9 mm long × 3.0 mm wide) and elongated rectangular-oval spur (7 mm long × 3 mm wide). P. viridiflorum, which is considered as a “Critically Endangered Possibly Extinct” [CR(PE)] orchid, is also re-collected after after a gap of nearly 150 years with a record of a new colour form (white colour variant) and, is re-described with designation of a lectotype and an epitype.