Polyceratocarpus scheffleri 


Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Magnoliales Annonaceae

Scientific Name: Polyceratocarpus scheffleri
Species Authority: Engl. & Diels
Taxonomic Notes: Thomas Couvreur (pers. comm.) thinks that the type specimen for Anonidium usambarense may in fact be this taxon.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii,iv,v) ver 3.1
Year Published: 2009
Date Assessed: 2006-03-02
Assessor(s): Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project
Reviewer(s): Beentje, H., Gereau, R., Kabuye, C., Kalema, J., Luke, Q., Lyaruu, H., Maunder, M., Mwachala, G., Ndangalasi, H., Njau, F. & Schatz, G. (East African Plants Red List Authority)
The extent of occurrence is <5,000 km², only known from five locations and the population is severely fragmented and there is continuing decline due to habitat loss and disturbance (from expanding agriculture and spread of alien invasive species) with the subpopulation at Kimboza probably being lost.
Previously published Red List assessments:
1998 Endangered (E)
1998 Vulnerable (VU)

Geographic Range [top]

Range Description: Recorded from a number of the Tanzanian Eastern Arc Mountains - Usambaras, Udzwungas, Kimboza (now gone), and in the Luhega and Lulanda Forest Reserves.
Countries occurrence:
Tanzania, United Republic of
Continuing decline in area of occupancy (AOO): Yes
Estimated extent of occurrence (EOO) - km2: 2499
Continuing decline in extent of occurrence (EOO): Yes
Number of Locations: 5
Lower elevation limit (metres): 360
Upper elevation limit (metres): 1700
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This is a very occasional species, which is never found in large numbers where it occurs.
Current Population Trend: Unknown
Additional data:
Continuing decline of mature individuals: Yes
Population severely fragmented: Yes

Habitat and Ecology [top]

Habitat and Ecology: This tree grows in lowland and montane forest.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes

Threats [top]

Major Threat(s): This species has probably gone from Kimboza Forest Reserve due to forest loss for agriculture, fire, and invasion by Cedrela. There are similar threats for the East Usambaras, the invasive species here being Maesopsis.

Conservation Actions [top]

Conservation Actions: Recorded from several protected areas, e.g., Udzungwa Mountains National Park, West Kilombero and Amani Nature Reserves, Lulanda and Luhega Forest Reserves.

Citation: Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project. 2009. Polyceratocarpus scheffleri. The IUCN Red List of Threatened Species 2009: e.T32859A9728668. . Downloaded on 27 November 2015.
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