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Bulletin of Botanical Research ›› 2020, Vol. 40 ›› Issue (6): 820-829.doi: 10.7525/j.issn.1673-5102.2020.06.004

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Fruit Shape and Micromorphological Characteristics of Pericarp Surface of 18 Lamiaceae Plant in Jinggangshan Area

Xian-Lan DENG, Xia-Xia CHEN, Zheng-Guang ZHANG   

  1. College of Life Science,Jinggangshan University,Ji’an 343009
  • Received:2019-12-29 Online:2020-11-20 Published:2020-11-04
  • About author:DENG Xian-Lan(1969—),female,associate professor,doctor,main engaging in plant classification and systematic evolution research.
  • Supported by:
    the National Natural Science Foundation of China(31660053);Natural Science Foundation of Jiangxi province(20181BAB204004)


The fruit shapes and micromorphological characteristics of fruit surface of 18 species of Lamiaceae in Jinggangshan area were examined by scanning electron microscopy(SEM). Six types of the fruit shape were recognized, including oblong, circular, oval, triangular, globose, and ellipsoid. The cell shapes of exocarp surface were tetragon-hexagon, irregular-shaped and invisible, and the protrusion of epidermis were observed as smooth, depressed and raised. The waxy ornamentation of exocarp surface was more complex and diverse, which can be classified into four types: smooth and no ornamentation, negative-reticular ornamentation, reticular ornamentation with warty or lumpy projections, reticular ornamentation with secondary stripes. The accessory structures mainly included epidermal hairs and filamentous structures, and with more or less squamaccous or granulated secretions on fruit epidermal surface. In conclusion, fruit shapes and micromorphological characteristics of pericarp surface of the 18 species exhibited rich diversity, which could provide important taxonomic evidence for the study of inter-genera and interspecies relations of Lamiaceae.

Key words: Lamiaceae, scanning electron microscopy(SEM), fruit shape, micromorphological characteristics

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