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Rhipsalis pentaptera 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae

Scientific Name: Rhipsalis pentaptera Pfeiff. ex A.Dietr.
Taxonomic Source(s): Hunt, D., Taylor, N. and Charles, G. (compilers and editors). 2006. The New Cactus Lexicon. dh Books, Milborne Port, UK.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii,v)+2ab(iii,v) ver 3.1
Year Published: 2013
Date Assessed: 2010-06-04
Assessor(s): Taylor, N.P. & Zappi, D.
Reviewer(s): Chanson, J.S. & Goettsch, B.K.
Facilitator/Compiler(s): Hilton-Taylor, C.
Justification:
The species is only known to occur in private gardens within a tiny area in the city of Rio de Janeiro, as far as we know it is probably still declining due to the ongoing impacts of urbanization and the area can be considered a single location (the extent of occurrence and area of occupancy are the same, just over two square kilometres). The species is therefore listed as Critically Endangered and it might be Extinct in the Wild very soon.

Geographic Range [top]

Range Description:This species is endemic to Brazil in Rio de Janeiro (Hunt et al. 2006); the species is confined to a few private properties in the city, growing on trees in their gardens at less than 100 m asl.
Countries occurrence:
Native:
Brazil (Rio de Janeiro)
Additional data:
Estimated area of occupancy (AOO) - km2:3
Number of Locations:1
Upper elevation limit (metres):100
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population size is not known, as the properties where it occurs are not accessible, but it is likely to be very small given the very tiny range of the species.
Current Population Trend:Decreasing
Additional data:
Continuing decline of mature individuals:Yes
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The species would have occurred as an epipyhte in lowland moist forest, but the area is now entirely an urban environment. The trees the species grows on, may be remnants of the former forest, but the species cannot be considered to be growing in a truly wild state.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: The species is widely cultivated as an ornamental.

Threats [top]

Major Threat(s): Urbanization would have destroyed all the natural habitat and the future safety of the remaining plants depends entirely on the property owners and whether or not they keep the trees on their properties. As the demand for housing increases it is likely that many of these trees will be removed or if they die are unlikely to be replaced, so the species could well become completely extinct in the wild in the not too distant future.

Conservation Actions [top]

Conservation Actions: The future survival of this species in gardens depends entirely on the attitudes of the land owners.

Citation: Taylor, N.P. & Zappi, D. 2013. Rhipsalis pentaptera. The IUCN Red List of Threatened Species 2013: e.T152365A628721. . Downloaded on 18 November 2017.
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