Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Euphorbiales Euphorbiaceae

Scientific Name: Euphorbia leuconeura
Species Authority: Boiss.

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Haevermans, T.
Reviewer(s): Rajeriarison, C., Labat, J.N., Lowry, P. & Randrianjohany, E. (Madagascar Plants RLA)
This species, although well known in the horticultural trade, is poorly known in the field. It was found recently in the Montagne des Francais, however, the herbarium records contain two dubious specimens located outside this zone: one sampled from a cultivated plant in the Jardin de Tsimbaza, supposedly originating from Ankarana, and the other from the Valley of the Andalangy (Bemarivo). This species is suspected to grow only in the Montagne des Francais, but more field studies tare neded o ascertain its area of occupancy and extent of occurrence.

Geographic Range [top]

Range Description: North Madagascar: Montagne des Francais. Possibly found in the Ankarana and Bemarivo areas (where two dubious specimens were reportedly collected).
Countries occurrence:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Current Population Trend: Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: Tsingy (limestone) of the montagne des Francais.
Systems: Terrestrial

Threats [top]

Major Threat(s): Habitat degradation, fire, collection for the horticultural trade.

Conservation Actions [top]

Conservation Actions: Listed under CITES Appendix II.

Classifications [top]

0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks)
suitability: Suitable  
1. Land/water protection -> 1.1. Site/area protection
1. Land/water protection -> 1.2. Resource & habitat protection
2. Land/water management -> 2.1. Site/area management
3. Species management -> 3.4. Ex-situ conservation -> 3.4.1. Captive breeding/artificial propagation
3. Species management -> 3.4. Ex-situ conservation -> 3.4.2. Genome resource bank

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
5. Biological resource use -> 5.2. Gathering terrestrial plants -> 5.2.1. Intentional use (species is the target)
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

7. Natural system modifications -> 7.1. Fire & fire suppression -> 7.1.3. Trend Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends

Bibliography [top]

IUCN. 2004. 2004 IUCN Red List of Threatened Species. Downloaded on 23 November 2004.

Rauh, W. 1995. Succulent and Xerophytic plants of Madagascar. Vol I. Strawberry Press, Mill Valley.

Citation: Haevermans, T. 2004. Euphorbia leuconeura. The IUCN Red List of Threatened Species 2004: e.T44372A10896588. . Downloaded on 07 October 2015.
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