Integrative Biology Journals
Plant Diversity

Plant Diversity ›› 2008, Vol. 30 ›› Issue (6): 665-678.DOI: 10.3724 SP.J.1143.2008.08007

• Articles • Previous Articles     Next Articles

Characters of Leaf Epidermis of Begonia (Begoniaceae) from China and Their Taxonomic Significance

ZHANG Rong-Mei1 , 2 , CHEN Wen-Hong1 , SHUI Yu-Min1, CHEN Shao-Yu3 , WEI Zhi-Dan1 , 2   

  1. 1 Key Laboratory of Biodiversity and Biogeography of Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China;
    2 Graduate University of Chinese Academy of Sciences, Beijing 100049 , China ; 3 The Key Laboratory of Rare and Endangered Forest Plant , Yunnan Academy of Forestry , Kunming 650204 , China
  • Received:2008-01-28 Online:2008-12-25 Published:2008-12-25

中国秋海棠属植物的叶表皮特征及其分类学意义

张嵘梅1 , 2 , 陈文红1 , 税玉民1, 陈少瑜3 , 魏志丹1 , 2   

  1. 1 中国科学院昆明植物研究所生物多样性与生物地理学重点实验室, 云南昆明 650204;
    2 中国科学院研究生院, 北京 100049 ; 3 云南省林业科学院国家林业局珍稀濒特
    森林植物保护和繁育重点实验室, 云南昆明 650204

  • 通讯作者: 税玉民

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Abstract: Leaf epidermis of 52 species and two varieties representing seven sections of Begonia (Begoniaceae ) from China were examined under light microscopy. The results showed that leaf epidermal characters of the genus revealed a remarkable consistency: the leaf epidermal cells were usually polygonal and subpolygonal bearing with straight or arched anticlinal walls; and the stomatal apparatus was mainly anisocytic type and presented in abaxial epidermis of all studied species. However, the multiple leaf epidermal characters, including the shape of epidermal cells, the pattern of epidermal hairs, the shape of stomatal apparatus, the type of crystals in epidermal cells and some distinct characters varies obviously with species, in particular among species allies .

Key words: 中国

摘要： Leaf epidermis of 52 species and two varieties representing seven sections of Begonia (Begoniaceae ) from China were examined under light microscopy. The results showed that leaf epidermal characters of the genus revealed a remarkable consistency: the leaf epidermal cells were usually polygonal and subpolygonal bearing with straight or arched anticlinal walls; and the stomatal apparatus was mainly anisocytic type and presented in abaxial epidermis of all studied species. However, the multiple leaf epidermal characters, including the shape of epidermal cells, the pattern of epidermal hairs, the shape of stomatal apparatus, the type of crystals in epidermal cells and some distinct characters varies obviously with species , in particular among species allies .

关键词: face=Verdana>在光学显微镜下,, 对中国秋海棠属(, Begonia), 植物7, 组52, 种2, 变种的叶表皮进行观察。结果表明秋海棠属植物叶表皮形态在属内组间具有较大的相似性,, 表皮细胞为多边形或近多边形,, 垂周壁平直或弓形,

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