Climate and Growing Arisaema

[George R. Stilwell, Jr.]

The following idea was sent to me by Ann Kline and I find it interesting.
Perhaps it will interest y'all too.

Guy, I think you might find it an interesting hypothesis.

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I have been reading with interest all of the correspondence on the
emergence of arisaemas.  I am sure if anyone would take the time to
study a little climatology they would find that the emergence of the
temperate arisaemas most likely corresponds to the beginning of the
rainy season/ monsoon.

The first rainy season of the year in Japan is
February where it begins to rain after a dry fall and winter similar to
our continental climate in the middle South,
the SE Asian monsoon begins
in April/May on the eastern part of the monsoon region in SE Asia
and in the western part in late May and June after an equally dry winter.

My triphyllum don't come up until the middle of April and the other U.S.
species from the Central U.S. not until a little later when the mid west
warms up.  Climatology has always been of interest to me since my father
was the chief engineer of the Weather Bureau when I was growing up.

Ann Kline
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I wonder if there is a corelation between the Asian species emergence times
and the climate where they originated.

Ray