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These characteristics pertain to the interior
part of the leaf blade as you move inward from the margins. The
descriptive terms include cupped, twisted, folded, wavy, corrugated
and flat. The modifier words applied include lightly, moderately,
deeply or intensely. So, a leaf might be described as intensely
corrugated or deeply cupped, for example.
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Corrugation in hosta leaves
involves wrinkles that extend from the outer edge of the leaf
into the center rib. This distinguishes this trait from wavy or
rippled which only occur near the edge of the leaves. Heavy
corrugation gives the plant a
generally coarse texture and feeling of great mass.
As with all traits, defining the
extent of this leaf characteristic is subjective. We have
divided hostas into three categories based on information from
available sources including registration forms:
Heavily Corrugated,
Moderately Corrugated or
Slightly Corrugated
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In some hostas, the cells at the
edges of the leaf grow more slowly than those in the center of
the leaf blade. This results in a cupping effect which can from
Heavily Cupped,
Moderately Cupped
or Slightly Cupped
depending on the depth created.
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Flat
- Leaves in this category are not flat as a board. Rather,
they are NOT
conspicuously rugose, cupped, contorted or undulate
along the margins.
Very Flat
-
Moderately Flat -
Slightly Flat
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Folded -
These are leaves that are not very rigid and may actually fold
over along the margins of the leaf blade.
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Piecrust - Essentially flat but have closely
spaced marginal undulations like the rim around the top of a
homemade apple pie. Distinct, regular, almost
uniformly spaced, and plainly recognized undulations on all
mature leaves.
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Twisted - As the name implies these
leaves have a twisted effect due to the uneven development of
cells in the center of the leaf blade.
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Wavy- Leaves are
relatively smooth but are very wavy and undulate. Several
broad waves on the leaf sometimes confined to the margins.
Leaf tip may be slightly twisted.
Heavily Wavy
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Moderately Wavy -
Slightly Wavy
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Heavily Rippled
- Moderately
Rippled -
Slightly Rippled
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