1. Family: Arecaceae Bercht. & J.Presl
    1. Genus: Dypsis Noronha ex Mart.
      1. Dypsis humilis M.S.Trudgen, Rakotoarin. & W.J.Baker

        Dypsis humilis is an unusual new species of stemless palm that was discovered during collaborative fieldwork by botanists from Kew and Madagascar in 2007. It was officially named and described in 2009 along with four other new species from the vicinity of Madagascar’s largest protected area, Makira, in the north-east of the island. It is an extremely rare plant - fewer than ten plants were seen by the expedition team in an unprotected locality just outside the park boundary.

    [KSP]

    Kew Species Profiles

    General Description
    A highly threatened new species of stemless palm discovered by Kew botanists on the edge of Madagascar's largest protected area.

    Dypsis humilis is an unusual new species of stemless palm that was discovered during collaborative fieldwork by botanists from Kew and Madagascar in 2007. It was officially named and described in 2009 along with four other new species from the vicinity of Madagascar’s largest protected area, Makira, in the north-east of the island. It is an extremely rare plant - fewer than ten plants were seen by the expedition team in an unprotected locality just outside the park boundary.

    Over 20 species of palm from Madagascar have been formally described as new to science by Kew botanists in 2009.

    Species Profile

    Geography and distribution

    This species occurs in northeast Madagascar, and is known from a single site above the Antainambalana River, west-northwest of Maroantsetra.

    Description

    Overview: This low-growing, shrub-like palm has no visible stem.

    Leaves: Its leaves, around 8 per plant, sprout like a shuttlecock directly from the ground. Each leaf is about 80 cm long and has around 16 leathery leaflets.

    Flowers: The flowers develop on insignificant inflorescences that appear among the leaves at the base of the plant.

    Fruits: The fruits are sickle-shaped, about 2 cm in length.

    Threats and conservation

    Dypsis humilis is known from only one locality where fewer than ten individuals were observed. Unfortunately the site is just outside the boundary of the Makira protected area and the forest is degraded, with much evidence of human activity (eg timber extraction).

    Unless new localities exist, the future for the species is far from secure. The impacts of climate change on the species and the forests in which it occurs are hard to assess at this time.

    Finding this species at Kew

    Dried and alcohol-preserved specimens are held in the Herbarium, where they are made available to bona fide researchers by appointment. Details of these can be seen in the online Herbarium Catalogue.

    Distribution
    Madagascar
    Ecology
    Disturbed rain forest on granitic ridge top, 100-200 m.
    Conservation
    Provisional IUCN assessment of Critically Endangered.
    Hazards

    None known.

    Images

    Distribution

    Found In:

    Madagascar

    Dypsis humilis M.S.Trudgen, Rakotoarin. & W.J.Baker appears in other Kew resources:

    First published in Palms (1999+) 53: 140 (2009)

    Accepted in:

    • [1] Govaerts, R.H.A. (2011) World checklist of selected plant families published update . Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Literature

    • [2] Rakotoarinivo, M., Trudgen, M.S. & Baker, W.J. (2009). The Palms of the Makira Protected Area, Madagascar. Palms 53: 125-146.

    Sources

    International Plant Names Index
    The International Plant Names Index (2016). Published on the Internet http://www.ipni.org
    [A] © Copyright 2016 International Plant Names Index. https://creativecommons.org/licenses/by/3.0

    Kew Species Profiles
    Kew Species Profiles
    [B] http://creativecommons.org/licenses/by-nc-sa/3.0
    [C]

    World Checklist of Selected Plant Families
    World Checklist of Selected Plant Families(2016). Published on the Internet http://apps.kew.org/wcsp/
    [D] See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement. http://creativecommons.org/licenses/by-nc-sa/3.0
    [E] © Copyright 2016 International Plant Names Index and World Checkist of Selected Plant Families. https://creativecommons.org/licenses/by/3.0