Jatropha unicostata


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Jatropha unicostata
Species Authority: Balf. f.

Assessment Information [top]

Red List Category & Criteria: Least Concern 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.

Geographic Range [top]

Range Description: Endemic to Socotra.
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: Widespread and dominant in succulent shrubland over most of Soqotra; common in semi-deciduous woodland on the limestone; rare on the granite of the Haggeher. Altitude of sea-level to 700 m; up to 1,050 m on Diksam Plateau.

Probably the commonest and most widespread shrub of lower and middle altitudes on Soqotra. It is abundant in rocky areas on the plains and over large ares of the limestone escarpments and plateaus. Like the other common shrub, Croton socotranus, it is surprisingly absent from the outer islands. However, unlike Croton socotranus, over its range it shows little variation. The most distinct variation is a prostrate, gnarled form found on windswept areas found on exposed parts of the south west limestone plateau. On the Noged Plain is considered to be on the increase. Comes into leaf after rain: on the southern side of the island in response to the summer rains (June to September) of the Southwest monsoon; on the northern side of the island in response to the winter rains (October to January) of the Northeast monsoon.
Systems: Terrestrial

Citation: Miller, A. 2004. Jatropha unicostata. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 03 September 2015.
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