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Trilepisium gymnandrum

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA MAGNOLIOPSIDA URTICALES MORACEAE

Scientific Name: Trilepisium gymnandrum
Species Authority: (Baker) J.Gerlach
Taxonomic Notes: Described as a Seychelles endemic Bosqueia gymnandra Baker 1877 but referred to Trilepisium madagascariense by Berg 1977. Subsequently gymnandra resurrected as T. gymnandrum (Gerlach 2000) on the basis of floristic differences between Seychelles and Afro-Malagasy specimens.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered D ver 3.1
Year Published: 2003
Date Assessed: 2003-04-30
Annotations:
Needs updating
Assessor(s): Gerlach, J.
Reviewer(s): Dulloo, M.E. & Mauremootoo, J. (Indian Ocean Island Plant Red List Authority)
Justification:
Only five mature individuals are known on a single island of 1,995 ha. This qualifies for Critically Endangered on the basis of the number of mature individuals. Has a very restricted range, but as there is no continuing decline, does not qualify for any of the other criteria.

Geographic Range [top]

Range Description: Restricted to Silhouette island, with an extent of occurrence of 20 km² and area of occupancy of 0.06 km². Occurred historically on Mahé and Praslin islands (collected there in 1768) but probably extinct there since the 1800s due to forest clearance. Five mature trees are known from two subpopulations (one tree by itself and four in the other subpopulation), separated by a distance of approximately 1 km.
Countries:
Native:
Seychelles
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: Occurs in mid-high altitude forest (over 250 m a.s.l.). The fruit is probably dispersed by endemic frugivorous birds and fruit bats but no direct observations made. Pollinators are unknown.
Systems: Terrestrial

Threats [top]

Major Threat(s): Past threats include habitat loss through deforestation and agricultural activities, and the impacts of invasive species on both the habitat and the direct competition with the species. Currently, the main threats are the ongoing impacts of invasive species and intrinsic problems given the restricted range and population size.

Conservation Actions [top]

Conservation Actions: Forest areas are managed for conservation by the Nature Protection Trust of Seychelles – Islands Development Company Silhouette Conservation Project, but there is no legal protection.

Citation: Gerlach, J. 2003. Trilepisium gymnandrum. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 20 September 2014.
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