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Issue: Vol. 622 No. 2: 25 Oct. 2023
Type: Article
Published: 2023-10-25
DOI: 10.11646/phytotaxa.622.2.2
Page range: 115-130
Abstract views: 422
PDF downloaded: 9

The study of the tribe Gastrodieae (Orchidaceae, Epidendroideae) in Sri Lanka I: two new species of Gastrodia

Faculty of Graduate Studies; University of Sri Jayewardenepura; Gangodawila; Nugegoda 10250; Sri Lanka.
Institute of Biochemistry; Molecular Biology and Biotechnology; University of Colombo; Colombo 00300; Sri Lanka.
Institute of Biochemistry; Molecular Biology and Biotechnology; University of Colombo; Colombo 00300; Sri Lanka.
Department of Plant and Soil Science; Texas Tech University; Lubbock; Texas 79409; USA.
Monocots Central Highlands mycoheterotrophy potato orchids Samanala Nature Reserve

Abstract

As the first step in the taxonomic study of the tribe Gastrodieae (Orchidaceae), two new species, Gastrodia munasinghae and G. thilakapremae are described here from Sri Lanka based on the distinct morphological differences and long-term field observations. Detailed taxonomic descriptions along with the line drawings, color plates, notes on habitat and ecology, distribution and conservation status, phenology and pollination ecology as well as morphological comparison to the other Gastrodia species in Sri Lanka are also discussed. Both species are endemic to the Island and are assessed as Critically Endangered according to the IUCN Red List criteria. Furthermore, notes are provided along with a distribution map for field identification of all Gastrodia species in Sri Lanka.

 

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