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Impatiens tanahkaroensis (Balsaminaceae), a new species from northern Sumatra, Indonesia

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  • Yusran E. Ritonga,
  • Wendy A Mustaqim
Yusran E. Ritonga
(1) Biologi Pencinta Alam Sumatera Utara, Jl. Prof. H. M. Yamin Gg. Obat II No.14, Sei Kera Hilir II, Medan Perjuangan, Medan, North Sumatra 20233, Indonesia; (2) Tumbuhan Asli Nusantara Foundation, BTN Korpri Blok C1 No 96, Kawatuna, Mantikulore, Palu, Sulawesi Tengah 94233, Indonesia
Wendy A Mustaqim
(1) Tumbuhan Asli Nusantara Foundation, BTN Korpri Blok C1 No 96, Kawatuna, Mantikulore, Palu, Sulawesi Tengah 94233, Indonesia; (2) Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra, Jl. Prof. Dr. Syarief Thayeb, Meurandeh, Langsa Lama, Langsa, Aceh 24416, Indonesia
DOI: https://doi.org/10.36253/jopt-20674

Published 2026-08-06

Keywords

  • Balsaminaceae,
  • Impatiens,
  • new species,
  • rheophytic,
  • Taxonomy,
  • northern Sumatra,
  • Indonesia
    • ...More
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How to Cite

Ritonga, Y. E., & Mustaqim, W. A. (2026). Impatiens tanahkaroensis (Balsaminaceae), a new species from northern Sumatra, Indonesia. Webbia. https://doi.org/10.36253/jopt-20674

Copyright (c) 2026 Yusran E. Ritonga, Wendy A Mustaqim

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Impatiens tanahkaroensis is described here as a new species known from the mountainous regions north of the Lake Toba area, northern Sumatra, Indonesia. It is a rheophytic species growing on a small stream, which is potentially threatened by flash floods. A detailed description, discussion, and living photographs are given.

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References

  1. Bachman S, Moat J, Hill AW, De La Torre J, Scott B. 2011. Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. ZooKeys. 150: 117–126. https://doi.org/10.3897/zookeys.150.2109
  2. Davies NMJ, Drinkell C, Utetridge TMA. 2023. The Herbarium Handbook. Richmond: Royal Botanic Gardens Kew.
  3. Grey-Wilson C. 1989. A revision of Sumatran Impatiens. Kew Bulletin. 44(1): 67–106.
  4. IUCN. 2012. IUCN Red List Categories and Criteria. Version 3.1. IUCN. Gland & Cambridge: IUCN Species Survival Commission.
  5. IUCN Standards and Petitions Committee. 2024. Guidelines for using the IUCN Red List Categories and Criteria. Version 16. Prepared by the Standards and Petitions Subcommittee, 122 pp. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf
  6. Janssen SB, Knox EB, Huysmans S, Smets EF, Merckx VSFT. 2009. Rapid radiation of Impatiens (Balsaminaceae) during Pliocene and Pleistocene: Result of a global climate change. Molecular Phylogeny and Evolution. 52(3): 806−824. https://doi.org/10.1016/j.ympev.2009.04.013
  7. Jeevith S, Arigela RK, Singh RK, Kabeer KAA, Rajasekar C, Kunhikannan C. 2022. The checklist of Impatiens Riv. ex L. (Balsaminaceae) in Nilgiri and Palani Hills of southern Western Ghats (India). Annales Universitatis Paedagogicae Cracoviensis Studia Naturae. 1915: 9–22. https://doi.org/10.24917/25438832.7.1
  8. Kiew R. 2016. Impatiens (Balsaminaceae) species from karst limestone in Kelantan, Malaysia, including three new species. Gardens’ Bulletin Singapore. 68(2): 225–238. https://doi:10.3850/S2382581216000181
  9. Monzalvo R, Escorcia–Guerrero DL, García–Montes, MA, Rewicz A, Rewicz T, Manríquez–Morán NL. 2024. The Mexican balsam, Impatiens mexicana Rydb: A redescription based on morphological and phylogenetic studies, with an update of the current geographical range of the species. Diversity. 16(2): 1–35. https://doi.org/10.3390/d16020087
  10. Mustaqim WA. 2025. Flora of Gayo Plateau I: A new Impatiens (Balsaminaceae) species with flame–coloured flowers from Sumatra, Indonesia. Telopea. 29: 173–176. https://doi.org/10.7751/telopea20712
  11. Mustaqim WA, Arico Z, Jayanthi S, Andini WR, Pratiwi D, Ruchisansakun S. 2024. Impatiens bungeusing (Balsaminaceae), a new species from the Northern Gayo Plateau, Sumatra, Indonesia. Taiwania. 69(4): 554–559. https://doi.org/10.6165/tai.2024.69.554
  12. Mustaqim WA, Mahardhika AY, Fauzan YSA, Arico Z, Primananda E, Robiansyah I. 2024. A new species of Impatiens (Balsaminaceae) from northern Gayo Plateau, northern Sumatra. Taiwania. 69(1): 57–61. https://doi.org/10.6165/tai.2024.69.57
  13. Mustaqim WA, Saputra R, Al Farishy DD, Tianara A, Ahmad RPP, Zainudin, Kartonegoro A, Ritonga YE, Sitepu BS, Randi A, Ardi WH. 2021 onwards. Digital Flora of Indonesia. Facilitated by Tumbuhan Asli Nusantara Foundation. www.indonesiaplants.org
  14. Ruchisansakun S, Suksathan P, van der Niet T, Smets EF, Saw–Lwin, Janssens SB. 2018. Balsaminaceae of Myanmar. Blumea. 63: 199–267. https://doi.org/10.3767/blumea.2018.63.03.01
  15. Shimizu T. 1970. Contributions to the flora of Southeast Asia II. Impatiens of Thailand and Malaya. The Southeast Asian Studies. 8(2): 187–217.
  16. Shimizu T, Utami N. 1997. Three new species of Impatiens (Balsaminaceae) added to Flora Malesiana. Kew Bulletin. 52(2): 435–442. http://www.jstor.org/stable/4110390
  17. Utami N. 2005. Two new species of Impatiens (Balsaminaceae) from Batang Gadis National Park, North Sumatra, Indonesia. Blumea. 50: 443–446. https://doi.org/doi.org/10.3767/000651905X622680
  18. Utami N. 2006. Endemic species of Impatiens spp. (Balsaminaceae) in Sumatra and its possibility as an ornamental plants. Biodiversitas. 7(2): 135–138. https://doi: 10.13057/biodiv/d070209
  19. Utami N. 2009. Impatiens rubricaulis (Balsaminaceae), A new species of Impatiens from West Sumatra. Reinwardtia. 13(1): 93–94.
  20. Utami N. 2011. Impatiens kunyitensis (Balsaminaceae), a new species from Sumatra, Indonesia. Kew Bulletin. 66: 187–190.
  21. Utami N. 2012a. Impatiens talakmauensis (Balsaminaceae) a New Species from Western Sumatra, Indonesia. Acta Phytotax, Geobot. 63(1): 51–54.
  22. Utami N. 2012b. Three new species of Impatiens (Balsaminaceae) from Sumatra, Indonesia. Kew Bulletin. 67(4): 731–737.
  23. Utami N. 2014. Balsaminaceae in Java: Taxonomy and their conservation status. Berita Biologi. 13(1): 49–55.
  24. Utami N. 2020. Impatiens marroninus, a new species of Impatiens (Balsaminaceae) from Sumatra, Indonesia. Blumea. 65(1): 10–11. https://doi.org/10.3767/blumea.2020.65.01.02
  25. Utami N. 2022. Impatiens dairiensis (Balsaminaceae), a new species from Sumatra, Indonesia. Nordic Journal of Botany 2022: e03397, 1–5. https://doi.org/10.1111/njb.03397
  26. Utami N, Damayanto IPGP. 2023. Annotated checklist of Indonesian Impatiens (Balsaminaceae). Nordic Journal of Botany 2023: e04088, 1–19. https://doi.org/10.1111/njb.04088
  27. Utami N, Shimizu T. 1998. A taxonomical study of Impatiens albo-flava Miq. (Balsaminaceae) from Sumatra. Jurnal Biologi Indonesia. 2(2): 95–103.
  28. Utami N, Shimizu T. 2005. Seed morphology and classification of Impatiens (Balsaminaceae). Blumea. 50(3): 447–456. https://doi.org/10.3767/000651905X622699
  29. Utami N, Tihurua EF. 2021. Impatiens (Balsaminaceae) diversity and conservation status in Mount Singgalang, West Sumatra. Buletin Kebun Raya. 24(3): 136–140. https://doi.org/https://doi.org/10.14203/bkr.v23i3.631
  30. Utami N, Wiriadinata H. 2010. Impatiens mamasensis (Balsaminaceae), a new species from West Celebes, Indonesia. Reinwardtia. 13(2): 211–212.
  31. Wang M, Lin J, Li B, Li J, Jin X, Li P. 2026. Impatiens tainingensis (Balsaminaceae), a new species from southeastern China. PhytoKeys. 252: 235–252. https://doi.org/10.3897/phytokeys.269.173115
  32. Yong Q, Li M, Li Z, Luo C, Zhang Z, Bai X. 2025. Complete chloroplast genomes of 13 species of the Impatiens genus for genomic features and phylogenetic relationships studies. Scientific Reports. 15: art. 4258. https://doi.org/10.1038/s41598–025–87254–7
  33. Yu SX, Janssens SB, Zhu XY, Liden M, Gao TG, Wang W. 2015. Phylogeny of Impatiens (Balsaminaceae): integrating molecular and morphological evidence into a new classification. Cladistics. 32: 1–19. doi: https://doi.org/10.1111/cla.12119