Floristic composition, life-forms and biological spectrum of Toor Al-Baha District, Lahej Governorate, Yemen

Othman Saad Saeed Al-Hawshabi, Mahmood Ahmed Al-Meisari, Salah Mohamed Ibrahim El-Naggar

Abstract


This paper enumerates 542 plant species belonging to 289 genera in 89 families of vascular plants collected from Toor Al-Baha district, Lahej governorate, Yemen, during 2008-2015. The Poaceae has the, relatively highest number of species (50 sp., 9.23%) followed by Asteraceae (38 sp., 7.01%), Euphorbiaceae (34 sp., 6.27%), Asclepiadaceae (30 sp., 5.54%), Fabaceae (28 sp., 5.17%) and Acanthaceae (26 sp., 4.80%). A genus represented by the greatest number of species is Euphorbia (19 species). Classification based on life form indicates that the chamaephytes (38.19%) comprise the largest proportion of the plants in the study area, followed by therophytes (28.60%) and phanerophytes (20.85%). The present results revealed that there are three parasitic species belong to two families these are: Cistanche phelypaea and Cistanche rosea (Orobanchaceae) and Striga angustifolia (Scrophulariaceae). Sixty three succulents taxa belong to eighteen families were recorded in the flora of the study area, among these families three are the richest ones (Asclepiadaceae 17, Euphorbiaceae 11 and Aloaceae 6).

Keywords


Floristic composition; Life form; Euphorbia; Succulent taxa; Yemen

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References


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