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NRLD - 330742 | Onychium divaricatum

Assessment ID
330742
Taxon name
Onychium divaricatum
(Poir.) Alston
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Onychium divaricatum
(Poir.) Alston
Assessed taxon level
Species
Higher level taxonomic groupings
Plants
Ferns and Allies
Kingdom
Plantae
Phylum
tracheophyta
Class
polypodiopsida
Order
polypodiales
Family
pteridaceae
Genus
Onychium
Species
divaricatum
Species authority
(Poir.) Alston
Location and scope
Specific locality or subnational name or regional name
United Arab Emirates (the)
Scope (of the Assessment)
National
Countries included within the scope of the assessment
United Arab Emirates (the)
Country ISO code(s)
ARE
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Least Concern
Abbreviated status
LC
Criteria system used
IUCN

(see Assessment details)

Assessment rationale/justification
The species is widespread and common in the mountains of the UAE, and is assessed as Least Concern.
Assessment details
Year assessed
2019
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Criteria system used
IUCN
Reference for methods given
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.
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
In the UAE, this species is widespread in the Hajar Mountains and the Ru'us al-Jibal from c. 200 m asl (Jongbloed et al. 2003) to at least 1,100 m (Feulner 2011). Records include Wadi Shih and Wadi Hayl (Khor Fakhan; Aspinal et al. 1995), and it occurs in Wadi Wurayah National Park (Feulner 2016), south to Wadi Hatta. Globally, this species occurs from north-east Africa and throughout the Arabian Peninsula, to Iran (Board of Trustees, RBG Kew 2018).
Is there a map available in assessment?
Yes
Habitat and systems
Ecological system type
Terrestrial
Not_assigned
Freshwater
Not_assigned
Marine
Not_assigned
Habitat
Habitat details as listed in assessment
This plant is perennial with rhizomes and can grow up to 0.15 m (Jongbloed et al. 2003). In the UAE, this plant occurs in silt at all elevations, in shade, often in shelter of boulders and in rock crevices in mountains (Jongbloed et al. 2003, Feulner 2011, 2016).
Threats and conservation measures listed
Threats listed in assessment
Localised impacts from development are likely, but there are no known widespread threats.
Publication
UAE National Red List of Vascular Plants
Allen, D.J., Westrip, J.R.S., Puttick, A., Harding, K.A., Hilton-Taylor, C. and Ali, H. 2021. UAE National Red List of Vascular Plants. Technical Report. Ministry of Climate Change and Environment, United Arab Emirates, Dubai.