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| Begonia incudiformicarpa Ardi & D.C. Thomas, B. iskandariana Ardi & D.C. Thomas, B. johntania D.C. Thomas & Ardi & B. tumburanoensis Ardi & D.C. Thomas in Ardi, Chikmawati, Witono & Thomas, 2018. |
Abstract
Material acquired on a recent expedition to Southeastern Sulawesi, Indonesia, presents an opportunity to reassess and provide an overview of the Begonia flora of the region. Eleven species are recognized including four new species described and illustrated here: Begonia incudiformicarpa, B. iskandariana, and B. tumburanoensis (all in Begonia section Jackia); and B. johntania (Begonia section Petermannia). The former three species are the first confirmed records of section Jackia on Sulawesi substantially extending the known eastern range limit of this section. In addition, an illustration and a lectotypification of Begonia flacca are presented, and an identification key to Begonia species in Southeastern Sulawesi is provided.
Keywords: Jackia, Petermannia, Platycentrum, Sulawesi Tenggara, Sultra, taxonomy, Begonia, Eudicots
Begonia species of Southeastern Sulawesi
1. Begonia aptera Blume (1827: 97)
2. Begonia balgooyi D.C.Thomas & Ardi in Thomas et al. (2018: 162)
3. Begonia flacca Irmscher (1953: 486)
4. Begonia incudiformicarpa Ardi & D.C.Thomas, spec. nov.
Etymology:— The specific epithet is a compound derived from “incudiformis” (Latin—anvil-shaped) and
“carpus” (Latin—fruit). It refers to the shape of the fruits which have wings with a pointed end. In side view, the fruit
shape resembles the shape of an anvil.
5. Begonia iskandariana Ardi & D.C. Thomas, spec. nov.
Etymology:— The specific epithet is selected to honour and commemorate the former Chairman of the Indonesian
Institute of Sciences (Lembaga Ilmu Pengetahuan Indonesia—LIPI), Prof. Dr. Iskandar Zulkarnain (1959–2017).
6. Begonia johntania Ardi & D.C.Thomas, spec. nov.
Etymology:— The specific epithet is in honour of Mr. Tan Jiew Hoe, a patron of botanical exploration and plant
taxonomy and generous supporter of the Begonia of Sulawesi project.
7. Begonia matarombeoensis D.C.Thomas & Ardi in Thomas et al. (2018: 166)
8. Begonia mekonggensis Girm. & Wiriad. in Girmansyah et al. (2009: 36)
9. Begonia ozotothrix D.C.Thomas in Thomas et al. (2009: 105)
10. Begonia tumburanoensis D.C.Thomas & Ardi, spec. nov.
Etymology:— The epithet refers to the locality where the species was discovered and collected: Tumburano
Waterfall, Wawonii island.
11. Begonia watuwilensis Girmansyah (2009: 70)
Wisnu H. Ardi, Tatik Chikmawati, Joko R. Witono and Daniel C. Thomas. 2018. A Synopsis of Begonia (Begoniaceae) of Southeastern Sulawesi including Four New Species. Phytotaxa. 381(1); 27–50. DOI: 10.11646/phytotaxa.381.1.7
