Blechnum
spicant
Deer Fern
One
of the common evergreen ferns on the forest floor in the coniferous
(and other) forests of the Pacific Northwest. This fern has
two
kinds of fronds: in this photograph, the taller ones, with
narrower pinnae, are the fertile fronds that produce spores in
sporangia. The slightly shorter fronds, with broader pinnae,
are
vegetative, for photosynthesis only.
http://ontarioferns.com/id/glossary/index.php
is good for fern terms