Indigofera sokotrana


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Indigofera sokotrana
Species Authority: Vierh.
Indigofera gerardiana Graham.
Taxonomic Notes: Synonym = Indigofera gerardiana Graham.

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Miller, A.
Reviewer(s): Abuzinada, A.H. & AL-Eisawi, D.M.H. (Arabian Plants Red List Authority)
Common in several vegetation types and under no present or perceived threat.
1998 Vulnerable

Geographic Range [top]

Range Description: Endemic to Soqotra.
Yemen (Socotra)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Evergreen and semi-deciduous montane woodland. Altitude of 500–1,350 m.

Distinct from other species on the island in both its habit and habitat: it is the only species that grows as a tree rather than as a herbs or shrublet and is the only species restricted to the relatively moist submontane vegetation of higher altitudes in the Haggeher mountains. It is probable that I. socotrana has a different evolutionary history from that of most other Soqotran Indigofereae: these radiated in response to the advance of arid conditions throughout Northwest Africa (Schrire 1995) during the Miocene.

One of the few arborescent Indigofera species. It is scattered relatively sparsely in areas of submontane and montane woodland.
Systems: Terrestrial

Citation: Miller, A. 2004. Indigofera sokotrana. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 30 August 2015.
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