-
during development by a
scale or film of
tissue called the
indusium (pl.:
indusia),
which forms an umbrella-like cover. Sori
occur on the
sporophyte generation...
- Russia, ****an and Korea. The name
silvery comes from the fact that the
indusia on the
underside of the leaf have a
silver color when the sori are close...
- Sori
under the leaf of the fern
Rumohra adiantiformis. Some are
still covered by
their indusia....
- submarginally, and are
covered by
reflexed flaps of leaf
tissue which resemble indusia.
Dimorphism between sterile and
fertile fronds is
generally subtle. They...
-
sporangia do not
reach maturity simultaneously. Many
groups in the
order lack
indusia, but when present, they are
attached either along the edge of the indusium...
- very
simple anastomosing. The sori are
mostly reniform in
shape and have
indusia,
except for the
Phegopteris group.
During the
early and mid 1900's all...
- veining. The
underside of each
leaflet has sori
beneath brown or
black indusia.
Cyrtomium falcatum is a
fairly common outdoor ornamental plant in temperate...
-
otherwise highly compound;
sporangia mostly born in
marginal sori with
false indusia that are +/-
continuous around the leaf margins;
several genera, including:...
-
outer edge, and
occur on all but the
lowest pinnae of
fertile fronds.
Indusia are absent.
Sporangia are
yellow to
brown at maturity.
Spores are produced...
- the pinnules. The
specific epithet may
really be a
reference to the red
indusia,
which cover the sori. It is semi-evergreen (in
cooler climates), with...