Plant Diversity ›› 2005, Vol. 27 ›› Issue (05): 489-500.

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Spore Morphology of Pteridophytes from China Ⅵ .Pteridaceae

DAI Xi-Ling1,2 , WANG Quan-Xi2, YU Jing2 , ZHU Rui-Liang1   

  1. 1 College of Life Science , East China Normal University , Shanghai 200062 , China ; 2 College of Life and Environment Sciences , Shanghai Normal University , Shanghai 200234 , China
  • Received:2005-02-22 Online:2005-10-01 Published:2005-10-01
  • Contact: WANG Quan-Xi

Abstract: The spore morphology of 30 species 4 variety of 2 genera of Pteridaceae from China was investigated under scanning electron microscope (SEM) . Among them, 29 species 4 variety belong to the genus Pteris . The spores of Pteris are trilete , radiosymmetrical , subtriangular in polar view and hemispherical or subhemispherical in equatorial view . The polar axes are 26 - 54μm long , and equatorial axes are 34 - 97μm long . The perispore is thin and the surface ornamentation is formed by the exospore . The types of ornamentation are tuberculiform-rugulate , verruciform-rugulate or lophate , the spore of most species with the equatoial flange, some species with proximal ridge and distal ridge . The spore morphology of Pteris is stable, and the difference between species is distinct , but the features of spore and sporophyte are not related. The spore of Histiopteris is monolete and bilaterally symmetrical, elliptical in polar view and kidney-shaped in equatorial view . The polar axes are 22 - 23μm long , and equatorial axes are 29 - 36 μm long . The perispore is thin and the surface ornamentation is formed by the exospore . The surface is rugulate . The spore morphology of Histiopteris and Pteris is very differential , put genus Histiopteris in family Pteridaceae is not suitable, according to the feature of spore morphology .

Key words: Pteridaceae