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[A study on pollen morphology of Dipsacus]
1Institute of Chinese Materia Madica, China Academy of Traditional Chinese Medicine, Beijing 100700, China.
Objective:
To study the pollen morphology of Dipsacus L. produced in China.
Method:
Examining the pollen morphology of 17 species and 2 varieties of Dipsacus L. with light microscope and scanning electron microscope.
Result:
The shape of pollen grains is spheroidal and the aperture is tricolpate. The ornamentation of exine may be divided into 3 types: dispinulate-reticulate, dispinulate-foveolate, dispinulate-rugulate or nearly smooth.
Conclusion:
Dipsacus is a natural class group, and the slight difference of its pollen grains is useful to some extent in the division of species.
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