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| Phreatia tinukariensis Juswara & Wibowo, in Juswara, Wibowo, Ormerod, Gumilang, Santoso, Sutikno et Kusumawaty, 2025. |
Abstract
A new species of Phreatia sect. Caulescentes from Sulawesi, Indonesia, Phreatia tinukariensis is described and illustrated. It closely resembles P. navicularis, described from Maluku (Seram, Indonesia), but differs in the shape of the labellum, in particular its basal part and the position of the circular thickenings on the labellum blade. A comparison between the two is presented in a table. A key to the Indonesian species of sect. Caulescentes is provided.
Keywords: Caulescentes; Mekongga Mountain; Phreatia; new species; subalpine
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| Phreatia tinukariensis sp. nov. a. Habit; b. flower, oblique view; c. flower bract; d. dorsal sepal; e. lateral sepal; f. petal; g. lip, flattened; h. lip, side view (showing the claw of the labellum); i. column; j. anther cap (Suyadi, Hamzah & Widjaja 9337, BO). — Drawn by Aninda Retno Utami Wibowo. |
Phreatia tinukariensis Juswara & Wibowo, sp. nov.
Most similar to Phreatia navicularis J.J.Sm. but differs in the flowers having the labellum with obtuse, weakly retrorse basal lobules (vs basal lobules subacute, patently to obliquely truncate), and two circular glands on the base of the junction of the labellum blade with the claw (vs on the claw). A detailed comparison is presented in Table 1.
Etymology. The species epithet is based on the village of Tinukari, which is the nearest inhabited settlement to the type locality.
Juswara, L.S.; Wibowo, A.R.U.; Ormerod, P.; Gumilang, A.R.; Santoso, W.; Sutikno; Kusumawaty, A. 2025. Phreatia tinukariensis (Orchidaceae: Thelasiinae), A New Species from Sulawesi, Indonesia. Blumea - Biodiversity, Evolution and Biogeography of Plants. DOI: doi.org/10.3767/blumea.2024.69.03.05
