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Piptostigma calophyllum 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Magnoliales Annonaceae

Scientific Name: Piptostigma calophyllum Mildler. & Diels

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ab(iii) ver 3.1
Year Published: 2014
Date Assessed: 2011-03-25
Assessor(s): Cheek, M.
Reviewer(s): Onana, J.-M.
Contributor(s): Gosline, G.
Facilitator/Compiler(s): Lopez Poveda, L.
Justification:
Spectacular for its large and beautiful leaves, this small cauliflorous tree is not easily overlooked. It was first published in 1915, based on Mildbraed 5791 from Ebolowa. This species is only known from seven locations (taking the three Bakossi records as one location), equating to an area of occupancy of 32 km², with continuing declines due to the threats as described below. Therefore the assessment of this species in Cheek et al. (2004) is maintained here. No new data has come to light since that publication excepting the extent of occurrence, calculated here as 114,058 km².
Previously published Red List assessments:

Geographic Range [top]

Range Description:Recorded from Cameroon: SW Region (Bakossi (3 coll.), Rumpi Hills (1 coll.); Littoral Region (Edéa (1 coll.)); S Region (Ébolowa (1 coll.); Sangmélima (1 coll.)) and Gabon (2 coll.).
Countries occurrence:
Native:
Cameroon; Gabon
Additional data:
Estimated area of occupancy (AOO) - km2:32
Number of Locations:8
Lower elevation limit (metres):900
Upper elevation limit (metres):1320
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Population size is not known but is probably declining.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It grows in pristine submontane evergreen forest; 900-1,320 m alt.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): The species is threatened by habitat loss due to forest clearance for logging and agriculture (M. Cheek pers. obs.).

Conservation Actions [top]

Conservation Actions: The three known trees in Bakossi constitute over a third of the global total suggesting that this locality might be the best focus of conservation efforts. None of these three seem under immediate threat, although this cannot be said of those elsewhere. Education, perhaps through a conservation poster, might facilitate protection of this charming tree. So far as is known, no individuals are protected in a National Park.

Citation: Cheek, M. 2014. Piptostigma calophyllum. The IUCN Red List of Threatened Species 2014: e.T45419A3001598. . Downloaded on 24 September 2018.
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