Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Liliopsida Arecales Palmae

Scientific Name: Dypsis brittiana
Species Authority: Rakotoarin.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) B1ab(iii,v); D ver 3.1
Year Published: 2012
Date Assessed: 2010-12-17
Assessor(s): Rakotoarinivo, M. & Dransfield, J.
Reviewer(s): Baker, W.J., Beentje, H.J. & Bachman, S., Baker, W.J. & Beentje, H.J.
This palm is known only from a single specimen collected at Tsaramain’Andro and the population is estimated to number less than ten mature individuals. This locality is just on the eastern boundary of the Makira protected area and is only just over one km² in extent. The local population is allowed to extract natural resources from the forest. The species is subject to a decline in habitat quality, and consequently in the number of individuals. This species has not been recorded again from any other locality since 2005 and a survey of the type locality in 2007 failed to find any plants, so it is possibly extinct.
Date last seen: 2005

Geographic Range [top]

Range Description:Endemic to northeast Madagascar where it is known from a single locality in the eastern central part of the Makira protected area, in Tsaramain'Andro vicinity. Occurs at 900 m elevation.
Countries occurrence:
Estimated area of occupancy (AOO) - km2:4
Number of Locations:1
Lower elevation limit (metres):900
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:A very rare palm, known from the type collection (in 2005) only and there are possibly fewer than 10 individuals. The area was surveyed in 2007 and no plants of this species were found.
Current Population Trend:Unknown
Additional data:
Number of mature individuals:1-9
Population severely fragmented:No
All individuals in one subpopulation:Yes

Habitat and Ecology [top]

Habitat and Ecology:Grows in submontane forest with individuals restricted to ridge tops.

Threats [top]

Major Threat(s): The species is located in areas where people are allowed to exploit natural resources in the reserve.

Conservation Actions [top]

Conservation Actions: The single known population is recorded within the boundary of Makira protected area. Research is required on the threats to this species and to determine the true size and extent of the population.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability: Suitable  major importance:Yes
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
  Percentage of population protected by PAs (0-100):91-100
In-Place Species Management
In-Place Education
5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.3. Unintentional effects: (subsistence/small scale)
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.5. Threats

Bibliography [top]

IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.2). Available at: (Accessed: 17 October 2012).

Rakotoarinivo, M., Trudgen, M.S. and Baker, W.J. 2009. The palms of Makira protected area, Madagascar. Palms 53(3): 125-146.

Citation: Rakotoarinivo, M. & Dransfield, J. 2012. Dypsis brittiana. In: The IUCN Red List of Threatened Species 2012: e.T195972A2437994. . Downloaded on 09 October 2015.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided