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Floristic Composition, Life‐forms and Chorotypes of Al‐Asabah region, Ash Shamayatayn District, Taiz Governorate, Yemen
Author(s) -
AlHawshabi Othman Saad Saeed
Publication year - 2017
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.201600015
Subject(s) - floristics , taxon , flora (microbiology) , acanthaceae , fabaceae , asteraceae , botany , biology , endemism , acacia , wadi , geography , ecology , genetics , bacteria , cartography
The present study deals with the floristic composition of the flora, life forms and phytogeographical affinities in Al‐Asabah region, Ash Shamayatayn district, Taiz governorate, Yemen, during the year 2013. In this research 34 families, 63 genera and 82 taxa were identified. Among them were 6 species of Pteridophyta, while the remaining 76 taxa belong to Angiospermae. The dicots are represented by 72 taxa, whereas the monocots are represented by 4 species. The largest of the families include: Acanthaceae, Asclepiadaceae, Asteraceae and Euphorbiaceae (7 species for each) and Fabaceae (6 species). The genera represented by the greatest number of species are Acacia and Heliotropium (4 species for both). It was also noted that the generic index is 1.30. The chief life forms include Chamaephytes (50%), Phanerophytes (20.73%) and Geophytes (12.20%). The Sudano‐Zambezian element dominates and forms the major component of the floristic structure. Results also reveal that sixteen taxa (19.51%) are endemic, among them are five taxa (6.10%) which are endemic to Yemen alone, while the remaining (13.41%) are near endemic to the flora of Yemen.