Umbilicus horizontalis | UAE National Red List of Vascular Plants

Taxa
Umbilicus horizontalis | (Guss.) DC.
Location
Countries in Assessment
United Arab Emirates
Country ISO code(s)
ARE
Does the assessment cover a marine EEZ area(s)?
Off
Scope (Assessment)
National
Taxon
Taxonomic Group
Plants
Taxonomic Group Level 2
Flowering Plants
Assessed taxon level
Species
Taxon distribution as listed in assessment
This species was first recorded for the UAE from Wadi Beh (Bih) by Böer and Chaudhary (1999). Later recorded (as Umbilicus horizontalis var. intermedius) in the UAE from the Ru'us al Jibal, Sha'am (Ras al-Khaimah) and Masafi (Jongbloed et al. 2003). Feulner (2011) recorded the species in the Ru'us al-Jibal from 500 m to at least 1,750 m asl and commented that the species is restricted in the UAE to the Ru'us al Jibal and Masafi, being either rare or absent from the Hajar Mountains to the south. This species has a Mediterranean distribution, present in southern Europe and North Africa, extending east to the Arabian Peninsula (Board of Trustees, RBG Kew 2019).
Habitats and Ecology
Ecological system type
Terrestrial system
No
Freshwater system
No
Marine system
No
Habitat
Habitat details as listed in assessment
Umbilicus horizontalis is found in mountain areas, in rock overhangs and crevices, and terrace walls (Jongbloed et al. 2003) in addition to shaded sites (G.R. Feulner, in litt, MEW 2010). It grows as a perennial herb up to 0.3 m in height, flowering from February to March (Jongbloed et al. 2003).
Is there a map available in assessment?
Yes
Assessed status
Asessment status in full
Least Concern
Assessment status abreviation
LC
Assessment rationale/justification
This species is found in the UAE in the Ru'us al-Jibal and the central-northern Hajar Mountains. Whilst the extent of occurrence (EOO) is restricted, it is considered unlikely that the species has undergone significant decline or is threatened, and it is therefore assessed as Least Concern.
About the assessment
Assessment year
2019
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Affliation of assessor(s)/contributors/reviewers listed on assessment
Government
IGO
Assessor affiliation specific
Government|IGO
Criteria system
Criteria system specifics
IUCN v3.1 + Regional Guidelines v4.0
Criteria system used
IUCN
Criteria Citation
IUCN. 2012. IUCN Red List Categories and Criteria: Version 3.1, Second edition. IUCN, Gland, Switzerland and Cambridge, UK. iv + 32pp pp. And IUCN. 2012. Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
Endemism
Endemic to region
Not_assigned
Endemism Notes
Is an endemic?: Not_assigned
Conservation
Threats listed in assessment
There is no information available. Grazing by livestock may impact the species in parts of its range, where it is accessible to livestock.
Conservation Measures

Conservation measures:
Conservation measures notes:
Required conservation measures:

Scientific Name Kingdom Phylum Class Order Family Genus
Umbilicus horizontalis Plantae Tracheophyta Magnoliopsida Saxifragales Crassulaceae Umbilicus