Rhus thyrsiflora 

Scope: Global
Language: English

Translate page into:

Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Sapindales Anacardiaceae

Scientific Name: Rhus thyrsiflora 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.
Previously published Red List assessments:

Geographic Range [top]

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

Population [top]

Population:A fairly common tree.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:A major component of semi-deciduous, submontane woodland on the limestone escarpments and the semi-deciduous and evergreen woodlands of the granite of the Haggeher mountains. Altitude of (220–)400–1,220 m.

The commonest and dominant tree over large areas of the Haggeher mountains. Its leaves drop in summer and comes into leaf in winter, even if there is no rain. In some areas it seems to be virtually evergreen. It fruits in the winter and comes into fruit in the summer. Rhus thyrsiflora has an interesting distribution on Soqotra. It is common in areas, which attract low cloud and rain, in the Haggeher and the limestone of the NE (Hoq and Hamaderoh) of the island, but is absent from the high rainfall areas on Jebal Ma’alih in the west. However, there is a small population on the remote limestone ridge at Heger above Ra’s Shu’ub. The limestone pinnacles along this ridge trap mist and support a small outlying relict of semi-deciduous woodland in the otherwise dry SW of the island. It is interesting that on this ridge R. thyrsiflora occurs at only 220 m – its lowest recorded altitude on the island. It is possible that the long isolation of this remote refuge has resulted in the telescoping of habitats . The phenomenon of t elescoping is found on old oceanic islands and has the effect compressing habitats into a smaller altitudinal range than would be expected – it thus effectively provides islands with a relatively greater range of habitats than similar areas on the mainland.

Threats [top]

Major Threat(s): It is under no immediate threat.

Citation: Miller, A. 2004. Rhus thyrsiflora. The IUCN Red List of Threatened Species 2004: e.T30412A9546191. . Downloaded on 22 June 2018.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided