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| Bulbophyllum sridithii Vuong, Aver., H. Tran & V.S. Dang in Truong, Dang, Tran, Maisak & Averyanov, 2020. |
Abstract
Bulbophyllum sridithii a new species to science is described and illustrated from Kon Ka Kinh National Park of Vietnam. The new species belongs to the section Cirrhopetaloides and resembles B. layae, B. hirundinis, B. electrinum, B. pecten-veneris and B. tingabarinum but differs in the size and shape of pseudobulbs, the shape of the leaf blade, and flower size. Morphological description, illustrations, data on habitat, phenology, and conservation status are provided.
Keyword: Cirrhopetaloides, endemism, Kon Ka Kinh National Park, new orchid species, plant diversity, plant taxonomy
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| Fig. 1. Bulbophyllum sridithii Vuong, Aver., H. Tran & V.S. Dang. A & B: Flattened flowering and fruiting plants. C: Intact flowering plant. D & E: Intact inflorescences, frontal and half-side views. F: flattened inflorescence. G: Floral bract. H: Flowers, views from different sides. I: Flower with intact median sepal, base of lateral sepals, petals and lip, frontal view. J: Flower with sepals removed, side view. L: Median sepal, frontal view, side view, and view from behind. M: Flattened petals. N: Lip, frontal fief, half-side view, and view from below. O: Column, side, and half-side views. P: Anther cap, view from above and from below. Q: Pollinia from different views. All photos taken by Truong Ba Vuong (made from specimen used for the holotype preparation, BV 459), correction, and design by L. Averyanov and T. Maisak. |
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| Fig. 2. Bulbophyllum sridithii Vuong, Aver., H. Tran & V.S. Dang. A: Flower, half-side view and view from behind. B: Flattened sepals and petals. C: Lip, frontal view. D: Lip, view from behind. E: Column, half-side view. F: Column, ovary and pedicel, side view. G: Anther cap, half-side view. H: Anther cap, abaxial and adaxial surface. I: Pollinia, frontal view and view from behind. Drawing by Truong Ba Vuong from the holotype specimen, BV 459, graphic correction by L. Averyanov. |
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| Fig. 3. Bulbophyllum sridithii. Holotype specimen, BV 459 housed at VNM (VNM00023643). |
Bulbophyllum sridithii Vuong, Aver., H. Tran & V.S. Dang, sp. nov.
(B. sect. Cirrhopetaloides Garay, Hamer & Sigerist)
Etymology: The species epithet refers to the name of
Professor Kitichate Sridith, famous researcher of
Indochinese flora.
Habitat and phenology: Clustering miniature branch
epiphyte growing in evergreen broad-leaved
submontane seasonal forests. Rare. Flowers in
December to January.
Distribution: VIETNAM, Gia Lai Province (Kon Ka
Kinh National Park). Endemic of southern Vietnam in
limits of Central Highlands (Tay Nguyen Plateau).
Ba Vuong Truong, Van Son Dang, Hop Tran, Tatiana V. Maisak and Leonid V. Averyanov. 2020. Bulbophyllum sridithii (Orchidaceae), new species from Vietnam. Taiwania. 65(4); 473-477. DOI: 10.6165/tai.2020.65.473
