SCANNING ELECTRON MICROSCOPIC OBSERVATIONS ON THE GAMETOPHYTE AND SPERM OF THE BRACKEN FERN, PTERIDIUM AQUILINUM (L.) KUHN

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SUMMARY

The three-dimensional structure of the gametophyte and sperm of the bracken fern is described. The sperm consists of a body with approximately three gyres and approximately forty cilia. The cilia are attached to the anterior end and oriented in a latero-posterior fashion.

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