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From: "J.E. Shields" <jshields104 at INSIGHTBB.COM>
Subject: Cold winter; ploidy of triphyllum
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Hi all,

Well, it is -11=B0F ("degrees F") out there, so I guess Indiana is still
officially in USDA cold zone 5 (winter lowest temperatures -10=B0 to
-20=B0F).  there is also a 3- to 4-inch layer of new snow on the ground, =so
that will help protect plants a bit from this cold.

I have plants of AA. sazensoo, thunbergii, fargesii, candidissimum,
consanguineum, ringens, sikokianum, serratum, urashima, and kishidae in t=he
ground out in the woodland garden, if memory serves correctly.  This wint=er
started off very wet in autumn, and then turned cold.  The ground has bee=n
frozen since about Christmastime.  Snow comer has come and gone, but at
least there is a little in place right now.  It will be very interesting =to
see what comes up and blooms, or even just comes up, in spring.

I was rummaging through the Arisaema-L archives yesterday, reading up on
seed germination.  In the process I came across a note on the ploidy of A.
triphyllum subspecies.  It seems that A. triphyllum ssp. triphyllum is
tetraploid (2n=56) while the other subspecies of triphyllum are diploid
(2n=28).  Can anyone comment on what subspecies is found native in
Indiana?  I supposed it is A. triphyllum triphyllum, but am not sure.

Who has sources of the diploid subspecies of A. triphyllum?  I want to tr=y
crossing with some of these Asian species and I guess they are mostly
diploids too. Is that true?

I am soaking some seeds of A. triphyllum growing in my garden, a female
plant from Gene Bush's nursery pollinated with a native central Indiana
male plant.  The same Indiana triphyllum pollen did not set on thunbergii
nor on ringens last year.  Could it be because of ploidy?

Jim Shields
in cold and snowy central Indiana (USA)

*************************************************
Jim Shields             USDA Zone 5             Shields Gardens, Ltd.
P.O. Box 92              WWW:    http://www.shieldsgardens.com/
Westfield, Indiana 46074, USA                   Tel. +1-317-896-3925
Member of INTERNATIONAL CLIVIA CO-OP