Deer Fern Spore
This plane of focus shows the colpus (fissure) on the concave side of the grain.
Transmitted Oblique Off Circular Polarized Light Illumination
Deer Fern, Blechnum spicant, is found in moist, maritime Northwest forests of North America and occasionally inland.
Significance in the Environment
The spores and sporangia are released in June to August.
Mickel, John T., 1979. HOW TO KNOW THE FERNS AND FERN ALLIES, Dubuque, Iowa. Wm. C. Brown.