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| Goodyera alveolata var. medogensis (H.Z.Tian, Y.H.Tong & B.M.Wang) Av.Bhattacharjee, Tsering, Layola, F.Banu & Anant Kumar Goodyera medogensis in Tong, Sun, Wang et Tian, 2022. |
Abstract
A new species of Goodyera (Orchidaceae) from Tibet, China, G. medogensis, is described and illustrated here. Molecular phylogenetic results based on one nuclear (ITS) and two plastid markers (matK and trnL-F) support the recognition of G. medogensis as a new species in Goodyera subsection Reticulum. Morphologically, the novelty is most similar to G. biflora, G. vittata and especially to G. hemsleyana, but differs by the thick grid lines of the reticulations with a diffused margin on the adaxial surface of the leaf blades, the inflorescence with more flowers, the obliquely obovate-rhombic petals, the yellow or yellowish labellum without a lamella on the blade, and the shorter trichomes on the floral bracts, sepals and ovary. Finally, a key to the species of Goodyera subsect. Reticulum in China is also provided.
Keywords: Cranichideae, Jewel orchid, morphology, new species, Orchidoideae, phylogeny
Goodyera alveolata var. medogensis (H.Z.Tian, Y.H.Tong & B.M.Wang) Av.Bhattacharjee, Tsering, Layola, F.Banu & Anant Kumar
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| Goodyera medogensis A habit B inflorescence C flower, lateral (left) and front (right) view, with the arrow showing close-up of trichomes on abaxial surface of sepals D sepals E petals F column with labellum, anther and ovary G labellum H pollinarium I column with part of the ovary. Photographs by Yi-Hua Tong. |
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| Goodyera medogensis and three morphologically similar species in situ A Goodyera medogensis (from Medog, Tibet) B G. hemsleyana (from Malipo, Yunnan) C G. biflora (from Medog, Tibet) D G. vittata (from Yingjiang, Yunnan). Photographs A, C, D by Huai-Zhen Tian B by Chao Hu. |
Goodyera medogensis H. Z. Tian, Y. H. Tong & B. M. Wang, sp. nov.
Diagnosis: Similar to G. hemsleyana, but distinguished by the greenish thick reticulations on the adaxial surface of leaf blades with diffused margin (vs. white thin reticulations with clear margin), inflorescence with more flowers ((6–)12–15 vs. 4–10), petals obliquely obovate-rhombic (vs. obliquely ovate-oblong), labellum yellow or yellowish (vs. white, with light greenish to pinkish tinge at apex) without lamella on blade (vs. with a low bi-lamellate callus), and floral bracts, sepals as well as ovary with shorter trichomes.
Yi-Hua Tong, Mei Sun, Bing-Mou Wang and Huai-Zhen Tian. 2022. Goodyera medogensis (Orchidaceae), A New Species from Tibet, China. PhytoKeys. 189: 141-154. DOI: doi.org/10.3897/phytokeys.189.77374
Researchgate.net/publication/358602594_Goodyera_medogensis_a_new_species_from_Tibet_China
AVISHEK BHATTACHARJEE, JAMBEY TSERING, RANJITH LAYOLA M.R., FARHEEN BANU, ANANT KUMAR. 2023. Elucidating taxonomic status of Goodyera medogensis (Orchidaceae) based on morpho-molecular data. Phytotaxa. 595(2); 209-218. DOI: doi.org/10.11646/phytotaxa.595.2.7 [2023-05-05]
Researchgate.net/publication/370527361_Elucidating_taxonomic_status_of_Goodyera_medogensis_based_on_morpho-molecular_data
