植物学报

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十大功劳属(小檗科)的叶结构分型新体系

赵白龙1, 2, 李业亮3, 王宇飞1, 2, 孙斌1*   

  1. 1中国科学院植物研究所, 植物多样性与特色经济作物全国重点实验室, 北京, 100093; 2中国科学院大学, 北京, 100049; 3河南中医药大学, 郑州, 450046
  • 收稿日期:2024-09-27 修回日期:2025-01-02 出版日期:2025-01-21 发布日期:2025-01-21
  • 通讯作者: 孙斌

New Leaf Classification of Mahonia (Berberidaceae)

Bailong Zhao1, 2, Yeliang Li3, Yufei Wang1, 2, Bin Sun1*   

  1. 1State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, 100093; 2University of Chinese Academy of Sciences, 100049; 3Henan University of Chinese Medicine, Zhengzhou, 450046
  • Received:2024-09-27 Revised:2025-01-02 Online:2025-01-21 Published:2025-01-21
  • Contact: Bin Sun

摘要: 小檗科十大功劳属是典型的东亚-北美洲际间断分布属, 在北半球新生代地层中有丰富的叶化石记录, 叶结构特征特殊, 易与其他被子植物类群区分, 有潜力成为一个独特的生物代用指标或模式植物, 用于追踪东亚北美物种间断分布格局形成过程。传统分类依据叶结构特征将十大功劳属下分为掌状脉的东方组和羽状脉的西方组。这里, 我们在前人基础上依托详细的叶结构特征将该属进一步细分为东方组下的7个叶片类型(Microphylla类型、Japonica类型、Cardiophylla类型、Bodinieri类型、Polyodonta类型、Fortunei类型和Nervosa类型)和西方组下的6个叶片类型(Chochoco类型、Dictyota类型、Volcania类型、Pumila类型、Lanceolata类型和Aquifolium类型)。新建的十大功劳属叶结构分型体系将有极大潜力服务于该属化石叶的分型及追踪其叶形态演化和洲际间断分布式样的形成研究。

关键词: 十大功劳属, 叶结构, 分型, 形态演化, 东亚—北美间断分布

Abstract: Mahonia (Berberidaceae) is a genus exemplifying a classic East Asia-Western North America (EA/WNA) disjunction, with extensive fossil leaf records in Cenozoic strata in the Northern Hemisphere. The combined characteristics of leaf architecture of Mahonia is obvoiusly distinguishable from those of other angiosperm taxa, making it a invaluable biological proxy or model plant for investigating the formation processes underlying the intercontinental discontinuity between East Asia and North America. Traditionally, taxonomists have classified the genus into two groups based on venation patterns: Group Orientales with palmate venation and Group Occidentales with pinnate venation. Here, on the basis of previous research, we refine this classification by identifying 7 leaf types within Group Orientales (Microphylla type, Japonica type, Cardiophylla type, Bodinieri type, Polyodonta type, Fortunei type, and Nervosa type) and 6 leaf types in Group Occidentales (Chochoco type, Dictyota type, Volcania type, Pumila type, Lanceolata type, and Aquifolium type), based on detailed leaf architecture characters. This newly established leaf architecture classification of Mahonia has a great potential for tracing its morphological evolution and biogeographic history.

Key words: Mahonia, leaf architecture, classification, morphylogical evolution, East Asia-Western North America disjunction