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Espostoopsis dybowskii

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA MAGNOLIOPSIDA CARYOPHYLLALES CACTACEAE

Scientific Name: Espostoopsis dybowskii
Species Authority: (Rol.-Goss.) Buxb.
Synonym/s:
Cereus dybowskii Rol.-Goss.

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(iii) ver 3.1
Year Published: 2002
Annotations:
Needs updating
Assessor/s: Taylor, N.P.
Reviewer/s: Stuppy, W. & Taylor, N.P. (Cacti & Succulent Plant Red List Authority)
Contributor/s:
Justification:
The extent of occurrence is 5,442 km², but area of occupancy is < 100 km². All the subpopulations are of limited extent, the northern one is affected by clearance of the caatinga in some places, the western of the two southern ones was recently burnt. Creation of reserves to accommodate this and associated species at its southern locations in the Rio de Contas valley (between Porto Alegre, Mun. Maracás and Jequié) was recommended by Taylor et al. in Oldfield (1997).

Geographic Range [top]

Range Description: The distribution of this isolated species is markedly disjunct between northern and eastern Bahia (Rio de Contas valley), the southern form showing some differences (notably smaller stems and more exserted olive-brown fruits) that could justify subspecific status. The better-known northern population, whence the type came, covers an extensive area within the município of Jaguarari and in some parts of this region the plant dominates the vegetation, forming impenetrable groves around and upon quartzitic outcrops. The southern populations are found on gneissic inselbergs (not quartzite) and are associated with a quite different suite of caatinga Cactaceae. Its disjunct distribution and the differences between the plants from the two areas implies that the species may be an ancient relict in decline.
Countries:
Native:
Brazil (Bahia)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Found in eastern caatinga element: dominant or co-dominant on gneiss/granite inselbergs or quartzitic rock outcrops and in the surrounding caatinga, at 300–650 m.
Systems: Terrestrial

Conservation Actions [top]

Conservation Actions: Listed on CITES App. II.
Citation: Taylor, N.P. 2002. Espostoopsis dybowskii. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 25 May 2013.
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