Arecaceae
Korthalsia

Korthalsia tenuissima Becc.

First published in Malesia 2: 275 (1886)
This species is accepted
The native range of this species is Peninsula Malaysia. It is a climber and grows primarily in the wet tropical biome.

Descriptions

Vernacular
rotan dahan tikus
Biology
This species is found in both lowland forest and on steep slopes in hill Dipterocarp forest at altitude of 50-500 m.
General Description
Clustering slender high climbing rattan reaching to 60 m in canopy, producing v slender ultimate branches. Juvenile shoots and suckers with stem to 9 mm in diameter with sheaths, with to 1.1 cm, with internodes to 70 cm long. Sheaths dull green, armed with oblique reflexed spines convex above, with scattered chocolate scales beneath and on rest of leaf sheath. Ultimate branches to 4 mm in diameter without sheaths, with to 6 mm, with much shorter internodes, rarely exceeding 15 cm in length, with very sparsely armed sheaths. Ocrea short to 3 cm long closely sheathing entire and green except for a tattered fringe 2-4 mm high. Lower leaves to 75 cm long with up to 6 broadly triangular leaflets to 14 cm long by 7 cm wide; upper leaves very much smaller to 40 cm long with no petiole, and cirrus to 20 cm and 5-6 leaflets on each side, to 10 cm long by 5 cm wide. Leaflets only faintly dis-colorous (? always - see notes) pale yellowish grey green. Inflorescences produced from topmost 1-4 nodes, consisting each of a single rachillae to 13 cm long by 8 mm wide, usually less. ± ripe fruit to 10 mm in length, 8 mm in diameter. Seedling leaf unknown.
Distribution
Perak, Selangor: endemic.
[PW]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: low confidence
[AERP]

Uses

Use
Good rattan for fine twine but too rare to be of much significance.
[PW]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Palmweb - Palms of the World Online

    • Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet http://www.palmweb.org. Accessed on 21/04/2013
    • Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License http://creativecommons.org/licenses/by-nc-sa/3.0