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Open AccessArticle

Floristic Diversity and Phytogeography of JABAL Fayfa: A Subtropical Dry Zone, South-West Saudi Arabia

1
Department of Biology, College of Science, King Khalid University, Abha 61413, Saudi Arabia
2
Department of Botany & Microbiology, Faculty of Science, South Valley University, Qena 83523, Egypt
3
Cell Culture Lab., Egyptian Organization for Biological Products and Vaccines (VACSERA Holding Company), 51 Wezaret El-Zeraa St., Agouza, Giza 12311, Egypt
*
Author to whom correspondence should be addressed.
These authors contributed equally as co-first authors.
Diversity 2020, 12(9), 345; https://doi.org/10.3390/d12090345
Received: 23 August 2020 / Revised: 3 September 2020 / Accepted: 5 September 2020 / Published: 7 September 2020
(This article belongs to the Section Plant Diversity)
The present study surveyed the flora of the Jebel Fayfa region, South-West Saudi Arabia to analyze four elements of the vegetation: floristic diversity, life form, lifespan, and phytogeographical affinities. A total of 341 species of vascular plants were recorded belonging to 240 genera in 70 families, of which 101 species distributed among 40 families were considered as new additions to the flora of Jabal Fayfa. Six species are considered endemic to the study area while 27 are endangered. The most represented families were Fabaceae, Asteraceae, and Poaceae. The flora of Jabal Fayfa exhibited a high degree of monotypism. A total of 20 families (28.57%) were represented by a single species, and 180 genera (75.00%) were monotypic. The recorded flora consists of 70.09% perennials and 29.91% annuals. Phanerophytes and therophytes were the most frequent lifeforms. Phytogeographical analysis revealed that the biregional elements of the Saharo-Arabian/Sudano-Zambezian chorotype are the most dominant chorotypes (35.48%), forming two-thirds of the floristic structure in Jabal Fayfa. The new additions to the local flora of the region indicate that the Jabal Fayfa region and the country need further thorough botanical exploration and documentation which would help in adding several species to the flora of Saudi Arabia. View Full-Text
Keywords: angiosperms; endemism; Fayfa Mountain; flora; life form; new records angiosperms; endemism; Fayfa Mountain; flora; life form; new records
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MDPI and ACS Style

Abbas, A.M.; Al-Kahtani, M.A.; Alfaifi, M.Y.; Elbehairi, S.E.I.; Badry, M.O. Floristic Diversity and Phytogeography of JABAL Fayfa: A Subtropical Dry Zone, South-West Saudi Arabia. Diversity 2020, 12, 345.

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