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Photographic gallery.  Thousands of particles under the microscope.
Sword Fern Spore Under the Microscope

Sword Fern Spores

This image includes one spore and the termination of two of the sporangiophores. The sporangiophore connects to the sporangium and the fern leaflet.

Transmitted Oblique Off Circular Polarized Light Illumination


Sword Fern, Polystichum munitum, is found in the Northwest forests of North America and inland along some river valleys.

Significance in the Environment

The spores and sporangia are released in the Spring.

Characteristic Features

Associated Particles


Click here for images of over 15,000 pollens and spores.
Mickel, John T., 1979. HOW TO KNOW THE FERNS AND FERN ALLIES, Dubuque, Iowa. Wm. C. Brown.