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hardy  Aroids)" <ARISAEMA-L at NIC.SURFNET.NL> Aroids)" <ARISAEMA-L at NIC.SURFNET.NL>
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From: "George R. Stilwell, Jr." <GRSJr at WORLDNET.ATT.NET>
Subject: Re: left-handed vs. right-handed spathes
In-Reply-To: <001f01c1eb44$4afeca80$8db92443 at ameritech.net>
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Handedness in all other contexts is determined by grasping. In this case
the stem
with thumb pointing toward the spathe and curling the fingers around the =stem.
If the spathe overlaps in the direction of the fingers, the hand grasping
the stem
determines handedness, left or right.

This rule is derived from the rule used in determining curl in electromag=netic
phenominon, polarization in optics and magnetics.

Damn, I knew all that EE and Optics training would be useful some day.

Ray

At 10:58 PM 4/23/2002 -0500, you wrote:
>Petra--I'm glad you noticed this--I don't know what it means, but perhap=s we
>can discern a meaning if enough of us track our own similar observations.
>My only question is:  How do you assess the handedness, e.g.,  looking a=t
>the spathe with the foldover  in front of you and the stem upright?, and=is
>the right or left from the point of view of the viewer, or from the stem='s
>point-of-view?
>  Adam Fikso, Glenview, IL  Zone 5a
>
>
>----- Original Message -----
>From: "Petra Schmidt" <petra at PLANTDELIGHTS.COM>
>To: <ARISAEMA-L at NIC.SURFNET.NL>
>Sent: Tuesday, April 23, 2002 1:17 PM
>Subject: left-handed vs. right-handed spathes
>
>
>> An observation...have you noticed that spathes can be left-handed or
>> right-handed when it comes to direction of spathe foldover?  Unrelated=to
>> male/female condition since I've seen both fold directions in each sex=...
>> Petra
>>
>> Petra Schmidt
>> Research/Special Projects Manager
>> Juniper Level Botanic Garden @ Plant Delights Nursery
>> 9241 Sauls Road
>> Raleigh, NC 27603
>> petra at plantdelights.com
>> 919-772-4794 phone
>> 919-662-0370 fax
>