Seed coat architecture of four Indian species of Ephedra and its taxonomic significance.

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    • Abstract:
      The article discusses the structural details of seed coat Ephedra and also mentions its taxonomic significance. Topics discussed include seed coat morphology and ultrastructure of angiosperms, importance of epidermal characters in delimitating Pteridospermales, Bennettitales and Cycadales, phylogenetic relations of seed coats.