Berlinia hollandii 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Fabales Fabaceae

Scientific Name: Berlinia hollandii Hutch. & Dalziel
Taxonomic Source(s): Mackinder, B.A. and Pennington, R.T. 2011. Monograph of Berlinia (Leguminosae). Systematic Botany Monographs 91: 1–117.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) B1ab(i,ii,iii)+2ab(i,ii,iii); C2a(i,ii); D ver 3.1
Year Published: 2017
Date Assessed: 2016-11-24
Assessor(s): Mackinder, B. & Hargreaves, S.
Reviewer(s): Rivers, M.C.
Berlinia hollandii limited to a small area in southeast Nigeria that has been subject to heavy deforestation, which is continuing. The two collections of this species were made in the late 1800s and it is not certain that this species still exists in this area, and could be extinct. The major forest loss in this area is leading to a decline in the area of occupancy (AOO), extent of occurrence (EOO) and habitat and mature individuals. As such this species is categorised as Critically Endangered (Possibly Extinct) B1ab(i,ii,iii,v)+B2 ab(i,ii,iii,v)+C2a(i,ii)+D.
Date last seen: 1898
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to south east Nigeria in west Africa, and the only two known collections were found around 100 m above sea level (Mackinder and Pennington 2011).
Countries occurrence:
Possibly extinct:
Additional data:
Estimated area of occupancy (AOO) - km2:4Continuing decline in area of occupancy (AOO):Yes
Estimated extent of occurrence (EOO) - km2:4
Continuing decline in extent of occurrence (EOO):Yes
Number of Locations:1
Lower elevation limit (metres):100
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is known from only two collections in 1897 and 1898 (Hepper and Neale 1971). This area has been heavily logged and cleared for agriculture (Mackinder and Pennington 2011) and it is thought possible that this species is now extinct.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:10-20

Habitat and Ecology [top]

Habitat and Ecology:Berlinia hollandii is a tree species, with specimens collected from an area of lowland forest.
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: There are no documented uses for this species, however other species in this genus are collected locally for building materials, as well as for food and medicines.

Threats [top]

Major Threat(s): This species occurs in south east Nigeria, an area which has been subject to high levels of logging (Mackinder and Pennington 2011). In addition the collections were made to the south west of the town of Calabar, which has experienced significant development in the last 100 years.

Conservation Actions [top]

Conservation Actions: There are no known ex situ collections of this species and ex situ conservation is recommended if found in the wild (BGCI 2016).

Citation: Mackinder, B. & Hargreaves, S. 2017. Berlinia hollandii. The IUCN Red List of Threatened Species 2017: e.T32711A112188569. . Downloaded on 19 June 2018.
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