Arecaceae
Calamus

Calamus padangensis Furtado

First published in Gard. Bull. Singapore 15: 62 (1956)
This species is accepted
The native range of this species is Peninsula Malaysia (Trengganu). It is a liana and grows primarily in the wet tropical biome.

Descriptions

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: confident
[AERP]

Vernacular
rotan ?
General Description
Slender ? clustering rattan. Stem without sheaths to 4 mm in diameter internodes to 15 cm long (? juvenile stems) with sheaths to 7 mm in diameter. Sheaths dull greenish brown armed with sparse, horizontal to slightly reflexed uniform spines 5-10 mm long with slightly bulbous bases, and caducous grey scales scattered between spines; minute spicules absent. Ocrea smooth, to 2 mm high. Knee well developed. Flagellum to 60 cm long. Leaf ecirrate to 40 cm long, including petioles to 16 cm long; petiole armed with very sparse short lateral spines to 2 mm long and remote reflexed hooks on underside. Leaflets about 20 on each side of the rachis, close and regular, ± equal sized throughout, to 13.5 cm long by 5 mm wide, with a dense tuft of orange-brown hairs on the underside at the point of origin, unarmed below, with scattered pale bristles on the nerves on the upperside; rachis with scattered red brown hairs. Only male inflorescence known, to 35 cm long with 1 partial inflorescence bearing arcuate rachillae to 2.5 cm.
Distribution
Trengganu: G. Padang - known only from the type (Kiah and Moysey 33,376).
[PW]

Uses

Use
None known.
[PW]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. 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 2025. 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