J Syst Evol ›› 1985, Vol. 23 ›› Issue (1): 29-35.

• Research Articles • Previous Articles     Next Articles

Pollen Morphology of Chinese Datura and Its Taxonomic Significance

1Peng Guang-Fang, 1Zhou Shu-Ming, 1Zhang Su-Qin, 1Zhao Dong-Po, 2Zhang Yu-Long, 2Lu An-Ming   

  1. 1 (Institute Of Traditional Chinese Medicine and Materia Medica of Shandong, Jinan)
     2(Institute of Botany, Academia Sinica, Beijing)
  • Published:1985-02-18

Abstract: The pollen grains of 11 taxa of Chinese Datura were examined under light microscope and scanning electron microscope. All of them are 3(-4)-colporate. The exine ornamentation is so distinct as to allow the identification of individual sections and species, and may be divided into three types. The division is consistent with the taxonomy based on gross morphology i.e. rugulato-reticulate (Sect. Stramonium); striate or striato-reticulate, with some granules on the surface of the lirae, or scabrous (Sect. Dutra); striate with some rings on the surface of the lirae, looking like silkworm (Sect. Brugmansia). The varieties or cultivated forms are not sufficiently distinct from each other in the pollen grains as observed in this investigation.

Key words: Datura, pollen morphology, Exine ornametation