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| Chiloschista gelephuense Ch.Gyeltshen & Dalström
in Gyeltshen, Dalström, Gyeltshen & Tobgay, 2019.
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Abstract
A new species of Chiloschista from a restricted area in Bhutan is described and illustrated. It is compared with C. parishii from Myanmar and Thailand, which has similarly colored flowers and from which it differs by the larger flowers, 15–18 mm versus 8–10 mm, and the lack of a glandular and pubescent, erect and curved callus lobe inside the lip, which is generally seen in other similarly colored species of this genus.
Key Words: Aeridinae, Bhutan, Himalaya, new Chiloschista, Orchidaceae, Vandeae
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| Figure 3. Chiloschista gelephuense flowered in cultivation at the Royal Botanic Garden, Serbithang, in May of 2015. |
Chiloschista gelephuense Ch.Gyeltshen & Dalström, sp. nov.
TYPE: Bhutan. Gelephu: North of Gelephu Tshachu hot springs ..., alt. ca. 300 m, epiphytic in shade on smaller trees, collected on 12 May, 2014, and flowered in cultivation at the Royal Botanic Garden, Serbithang, 12 May, 2015, S. Dalström 4212 & Ch. Gyeltshen (holotype: THIM) (Fig. 3–4).
Diagnosis: Chiloschista gelephuense is superficially similar to C. parishi in the yellowish flowers with brown spots on the sepals and petals, but differs by the larger flower, 15–18 mm across versus 8–10 mm across for the latter species. Chiloschista gelephuense also differs from other similarly colored species in the genus by the lack of a glandular pubescent, erect and curved callus lobe inside the lip.
Etymology: Named in reference to the sub-district (Dungkhag) of Gelephu, currently the only area where this species has been found.
Choki Gyeltshen, Stig Dalström, Nima Gyeltshen and Kezang Tobgay. 2019. A New spotted Chiloschista (Orchidaceae: Aeridinae) from Bhutan. LANKESTERIANA. 19(1); 23-29. DOI: 10.15517/lank.v19i1.37030
