Hirokazu, Tsukaya and Monica Suleiman and Hiroshi, Okada (2014) Didymoplexiella trichechus (J.J. Sm.) Garay and a new variety of Didymoplexis cornuta J.J. Sm. (Orchidaceae) in Borneo. Acta Phytotaxonomica et Geobotanica, 65. pp. 105-110. ISSN 1346-7565 (P-ISSN) , 2189-7042 (E-ISSN)
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Didymoplexiella trichechus (J.J. Sm.) Garay and a new variety of Didymoplexis cornuta J.J. Sm. (Orchidaceae) in Borneo_ABSTRACT.pdf Download (59kB) |
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Didymoplexiella trichechus (J.J. Sm.) Garay and a new variety of Didymoplexis cornuta J.J. Sm. (Orchidaceae) in Borneo.pdf Restricted to Registered users only Download (927kB) | Request a copy |
Abstract
We report the occurrence of Didymoplexiella trichechus (J.J. Sm.) Garay and Didymoplexis cornuta J.J. Sm. in Sabah, Borneo, Malaysia. They were considered to be endemic to Sumatra and Java, respectively, but were discovered during a botanical expedition in the Maliau Basin Conservation Area. We also determined the collection of Didymoplexis cornuta to represent a novel variety, D. cornuta var. maliauensis Tsukaya, M. Suleiman & H. Okada.
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| Additional Information: | Didymoplexis cornuta was thought to be endemic to Java, but we recently reported D. cornuta from West Kalimantan (Tsukaya & Okada 2012b). Didymoplexis cornuta var. betung-kerihunensis lacks the small, horn-like appendage at the base of the claw (Smith 1925), which is characteristic of the specimen from Sabah and of D.cornuta var. cornuta. The collection from West Kalimantan lacks ridges on the lip. Based on morphological differences and disjunct distribution, we propose the plants from Maliau Basin to be an undescribed variety of Didymoplexis cornuta , which here name var. maliauensis . Didymoplexiella trichechus was thought to be endemic to Sumatra, while five species of Didymoplexiella are known from Borneo (Wood &Cribb, 1994). Didymoplexiella trichechus now makes sixth species known from Borneo. Considering the close relationship of Didymoplexiella and Didymoplexis. |
| Keyword: | Borneo , Didymoplexiella trichechus , Didymoplexis cornuta var. maliauensis , Mycohetero-Troph , Orchidaceae , Sabah |
| Subjects: | Q Science > QK Botany > QK1-989 Botany > QK474.8-495 Spermatophyta. Phanerogams > QK495 Angiosperms S Agriculture > SB Plant culture > SB1-1110 Plant culture |
| Department: | INSTITUTE > Institute for Tropical Biology and Conservation |
| Depositing User: | SAFRUDIN BIN DARUN - |
| Date Deposited: | 28 Feb 2022 15:37 |
| Last Modified: | 19 May 2023 10:58 |
| URI: | https://eprints.ums.edu.my/id/eprint/31671 |
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