Examples of heterosporous pteridophytes

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Some examples of heterosporous pteridophytes are Selaginella, Azolla, Marsilea, Salvinia, Isoetes.

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According to Rashid(1976), only 9 genera of pteridophytes show heterospory,i.e., Selaginella, Isoetes, Stylites, Marsilea, Pilularia, Regnellidium, Salvinia, Azolla and Platyzoma.
answered by Kumari Anubha
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