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open,  this plant and A. macrophyllus are very confusing.
The latter comes in bloom first, although from Gray, one
is led to believe that A. corymbosus comes first.  It has
very large heart-shaped leaves on the lower part of the stem
which are sometimes slightly winged, so slightly, however,
sometimes, that one would hardly notice it; it has also
a very large corymb of flowers.  Now the plant, that is
called A. corymbosus has only a small corymb of flowers,
and although most of the plants have lower leaves heart-shaped and
on naked petioles, yet frequently (at any rate in this patch) a
plant would be formed with very large winged appendages on
the lower part of the petiolet, generally very irregular, some
having the appendage only on one side, some having a large one
on one side and a much smaller one on the other side.  So
taking it all and all, I feel very uncertain about the
plants.  At one place I found a foot-bridge, rather rustic,
across the falls - a huge tree stripped of its bark and
flattened along the upper and lower sides was thrown across
between two trees on opposite banks of the stream; leaning
against the tree and connected with the bridge was a nicely
        