Morphological Investigation of Genus <i>Ziziphus</i>Mill. (Rhamnaceae) in Saudi Arabia  

作　　者：Rabab Abdullah Almalki Dhafer Ahmed Alzahrani 

机构地区：[1]Department of Biological Sciences, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia [2]Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia

出　　处：《American Journal of Plant Sciences》2018年第13期2644-2658,共15页美国植物学期刊（英文）

摘　　要：The genus Ziziphus Mill. is a member of the Family Rhamnaceae and comprises of ca. 170 species distributed in tropical and subtropical regions. The species in the genus are of economic and medicinal importance. This study was conducted to identify the members of the genus in Saudi Arabia as well as morphological features that show delimitation in the genus. Field survey was conducted across the study area where 74 individuals were collected and used in the study;additionally, herbarium specimens were also employed. Both floral and vegetative parts which include habit, leaf, fruit and flowers were examined. The result showed that there is variation in morphological features among the species within the genus and the genus is represented by three species namely Ziziphus nummularia, Z. mucronata, and Z. spina-christi and two varieties Z. spina-christi var. spina-christi, Z. spina-christi var. microphylla.The genus Ziziphus Mill. is a member of the Family Rhamnaceae and comprises of ca. 170 species distributed in tropical and subtropical regions. The species in the genus are of economic and medicinal importance. This study was conducted to identify the members of the genus in Saudi Arabia as well as morphological features that show delimitation in the genus. Field survey was conducted across the study area where 74 individuals were collected and used in the study;additionally, herbarium specimens were also employed. Both floral and vegetative parts which include habit, leaf, fruit and flowers were examined. The result showed that there is variation in morphological features among the species within the genus and the genus is represented by three species namely Ziziphus nummularia, Z. mucronata, and Z. spina-christi and two varieties Z. spina-christi var. spina-christi, Z. spina-christi var. microphylla.

关 键 词：MORPHOLOGICAL Features RHAMNACEAE Saudi ARABIA Taxonomy ZIZIPHUS 

分 类 号：R73[医药卫生—肿瘤]