Lactuca dissecta | UAE National Red List of Vascular Plants

Taxa
Lactuca dissecta | D.Don
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 has a restricted distribution in the UAE, where it is known from Wadi Ashwani and Wadi Helo in the northeast of the UAE (Jongbloed et al. 2003, El-Keblawy et al. 2016). In Ras al-Khaimah, the species has been recorded from Wadi Sfai (M. Tsaliki pers. comm. 2019). It occurs in the Ru'us al Jibal in Oman. Globally, the native range of this species spans from the Arabian Peninsula to western Asia and India (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
This annual forb species can grow up to 1.5 m in height, it has rosette leaves and produces white-blue flowers between march and May (Jongbloed et al. 2003). It is found growing within montane areas in gravel, in addition to fields and wadis (Jongbloed et al. 2003). Lactuca dissecta is a crop wild relative of lettuce, Lactuca sativa (Kameswara Rao 2013). In Oman, it is found in silt and gravel along wadi bottoms.
Is there a map available in assessment?
Yes
Assessed status
Asessment status in full
Near Threatened
Assessment status abreviation
NT
Assessment status criteria
B1a+2a; D1
Assessment rationale/justification
The EOO is estimated at around 900 km<sup>2</sup>, which falls within the threshold for threatened categories. However, there is little information on threats to this species, making it difficult to estimate the number of locations or ascertain whether it is experiencing a continuing decline. As a result, this species is assessed as Near Threatened (B1a+2a; D1) due to its restricted distribution and the probability that the population size is small. No regional adjustment is made.
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.
Conservation Measures

Conservation measures:
Conservation measures notes:
Required conservation measures:

Further information
History
The species is thought likely to have had a similarly restricted range in 1996 and to have also qualified as NT at that time.
Scientific Name Kingdom Phylum Class Order Family Genus
Lactuca dissecta Plantae Tracheophyta Magnoliopsida Asterales Asteraceae Lactuca