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references

  • Tryon, A. F. (1986). Stasis, diversity and function in spores based on an electron microscopic survey of the Pteridophyta. In: Pollen and Spores, Form and Function (Ed. by S.Backhouse and I. K.Ferguson), pp. 233249. Linnean Society Symposium Series 12. Academic Press, London .
  • Tyron, A. F. (1990). Fern spores: evolutionary levels and ecological differentiation. In: Morphology, Development and Systematic Relevance of Pollen and Spores. (Ed. by M.Hesse and F.Ehrendorfer), pp. 7179. Systematics and Evolution Supplement 5. Springer-Verlag, Vienna .
  • Tyron, R. M. and A. F. Tryon (1982). Ferns and Allied Plants with Special Reference to Tropical America. Springer-Verlag, New York .