Dypsis brevicaulis
This dwarf palm from Madagascar is threatened by forest destruction. It is only known from three sites, and fewer than fifty Dypsis brevicaulis plants have been found in the wild.
Species information
- Scientific name: Dypsis brevicaulis (Guillaumet) Beentje & J.Dransf.
- Common name(s): None recorded.
- Synonym(s): Neophloga brevicaulis
- Conservation status: Critically Endangered (CR) according to IUCN Red List criteria.
- Habitat: Evergreen forest; on white sand or laterite.
- Key uses: None recorded.
- Known hazards: None recorded.
Taxonomy
- Class: Equisetopsida
- Subclass: Magnoliidae
- Superorder: Lilianae
- Order: Arecales
- Family: Arecaceae
- Genus: Dypsis
About this species
The leaves of Dypsis brevicaulis, a rare palm found in very small numbers at only a few sites in Madagascar, appear to grow directly out of the ground, hence its Latin epithet ‘brevicaulis’, which means ‘short-stemmed’.
Geography & Distribution
This palm species is known from only three sites in the north of Tolagnaro, in the extreme southeast of Madagascar, where its numbers are extremely low. It occurs in the forests of the east coast, just north of Manantenina and Manafiafy/Sainte-Luce, at 100-700 m above sea level.
Description
Dypsis brevicaulis in littoral forest in Madagascar (Image: John Dransfield)
Dypsis brevicaulis is a dwarf palm which appears to be almost acaulescent (lacking a visible stem). The stem is mostly underground and is up to 15 cm long and 2 cm in diameter. Its 5-8 leaves are covered with reddish scales, have two small auricles (ear-like lobes) at the base and ragged margins. The erect leaves are narrowly triangular in shape, up to 1.5 m in length, and have a deeply-notched apex. The inflorescences are usually unbranched but rarely branch into two, and are up to 40 cm long and covered with small scale-like hairs. Each inflorescence carries 60-80 clusters of flowers (known as triads), each flower being no more than 3 mm in diameter.
Threats & Conservation
Known from only three sites, north of Tolagnaro, Dypsis brevicaulis numbers are extremely low (fewer than 50 have ever been seen). This area is being deforested by villagers for use in shifting cultivation and there are also plans to mine for ilmenite (a mineral used in titanium dioxide production) there in the future.
Conservation assessments carried out at Kew
Dypsis brevicaulis is being monitored as part of the IUCN Sampled Red List Index for Plants, which aims to produce conservation assessments for a representative sample of the world’s plant species. This information will then be used to monitor trends in extinction risk and help focus conservation efforts where they are needed most.
Learn more about some of the plants that were assessed as part of this project.
Useful Links
Search Kew's databases for more information on this species
Find out more about Dypsis brevicaulis and the work being done in Madagascar at the following sites:
Madagascar Threatened Plants Project
References & Credits
Dransfield, J. & Beentje, H. (1995). The Palms of Madagascar. Royal Botanic Gardens, Kew.
Rakotoarinivo, M. & Dransfield, J. (2010). Dypsis brevicaulis. Assessment using IUCN Categories and Criteria 3.1 (IUCN 2001). Royal Botanic Gardens, Kew.
Kew Science Editor: Lauren Gardiner
Kew contributors: Mijoro Rakotoarinivo, John Dransfield
Copyediting: Emma Tredwell
While every effort has been taken to ensure that the information contained in these pages is reliable and complete, the notes on hazards, edibility and suchlike included here are recorded information and do not constitute recommendations. No responsibility will be taken for readers’ own actions. Full website terms and conditions.
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Fact Box
Crinum brachynema
karnaphul
Crinum brachynema is a Critically Endangered bulbous plant, with great potential as an ornamental, and is restricted to Gujarat and Maharashtra States in western India.
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