Foliar trichomes of <i>Croton</i> L. (Euphorbiaceae: Crotonoideae) from China and its taxonomic implications

Authors

  • Huan-Fang Liu Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Chinese Academy of Sciences, CN-510650 Guangzhou
  • Yun-Fei Deng Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Chinese Academy of Sciences, CN-510650 Guangzhou
  • Jing-Ping Liao Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Chinese Academy of Sciences, CN-510650 Guangzhou

DOI:

https://doi.org/10.3329/bjpt.v20i1.15468

Keywords:

Croton, Foliar trichome, Taxonomy, Infrageneric classification

Abstract

Foliar trichomes of 21 species of the genus Croton L. from China have been examined using stereomicroscopy and scanning electron microscopy. Five trichome types characterized by their morphology are identified, viz., stellate, lepidote, simple, dendritic and appressed-rosulate. Only stellate trichome is observed in most species, with only six species that are found to maintain two or three trichome types. Trichome types and density are useful for species identification and sectional classification for Chinese species. Based on the trichome types and other morphological characters, 21 Chinese species are proposed to be placed in five sections. Croton crassifolius belongs to sect. Andrichnia; C. cascarilloides belongs to sect. Monguia; C. mangelong, C. kongensis, C. laevigatus and C. laniflorus belong to sect. Argyrocroton; C. lauioides, C. howii and C. damayeshu belong to sect. Adenophylli. The remaining Chinese Croton species might be placed into sect. Croton. A key for Chinese Croton species based on trichome morphology is provided.

DOI: http://dx.doi.org/10.3329/bjpt.v20i1.15468

Bangladesh J. Plant Taxon. 20(1): 85-94, 2013 (June)

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Published

2013-06-25

How to Cite

Liu, H.-F., Deng, Y.-F., & Liao, J.-P. (2013). Foliar trichomes of <i>Croton</i> L. (Euphorbiaceae: Crotonoideae) from China and its taxonomic implications. Bangladesh Journal of Plant Taxonomy, 20(1), 85–94. https://doi.org/10.3329/bjpt.v20i1.15468

Issue

Vol. 20 No. 1 (2013)

Section

Articles

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