HIST:HYB: Umbrata

I started looking through the HIPS photos for examples of diploid and
tetraploid varieties that showed what I would call "Umbrata" from a genetic
point of view, ranging from butterfly-wing-vein sorts to bordered and
non-bordered fall surface overlays.

This may help develop a common language for the term.  Linda, I don't think
"Umbrata" could be defined by the border.  As Betty W. speculated, that is
simply a part of the fall the overlay pigment doesn't cover, and occurs in
many, but not all, those with the fall overlay.  Some are "bleed" edged--like
a photograph printed all the way to the edge of the paper.

I'll try to finish sorting through some typical illustrations of what looks to
me like the genetic type in various forms, then post something in the morning
about what I've observed.

I'm fairly sure the "Umbrata" pattern is a derivitive of the fall pattern on
*Iris variegata,* but much modified by hybridization and influences brought in
from the tetraploids, many of which are bitone or bicolored at least to some
degree.  If this is correct, then the overlay pattern can range from falls
covered with colored veins to falls veined strongly in the haft area, but
blending together beyond the beard to solid color, with or without a fall
border.

The most typical ones have a definite border, but the width varies over quite
a range.

Neil Mogensen  z 7 western NC mountains which are bracing for a deluge between
now and Sunday.  We're told to expect 8-ll inches of rain, winds with gusts up
to 60 mph in exposed areas.

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