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Thu Mar 7 21:49:46 CET 2002

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From: "P.Bruggeman" <pbruggeman at WISH.NET>
Subject: Re: any spontaneous hybridization?
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Is that article by Sanders and Burk accompanied by a picture of the putat=ive
hybrid between stewardsonii and dracontium? If so, what kind of spadix ha=d
that hybrid? The species in question have quite different spadices, did t=he
spadix of the putative hybrid portrude upwards out of the spathe or was i=t
still inside the spathe? Although I am of the purist-type that doesn't
favour hybrids, I am still curious.... And besides, natural crosses are n=ot
the kind of hybrids I dislike but let's not get into that....


PS. For anybody wondering what the "parents" were of A. ehimense, it is a
natural cross between A. serratum x A. tosaense.

-----Oorspronkelijk bericht-----
Van: Arisaema Enthusiast Group (AEG) Discussion List (and other hardy
Aroids) [mailto:ARISAEMA-L at NIC.SURFNET.NL]Namens Susanne Renner
Verzonden: donderdag 7 maart 2002 19:20
Onderwerp: any spontaneous hybridization?

The two North American species of Arisaema have been reported to
hybridizate naturally:

Sanders, L. L., and C. J. Burk. 1992. A naturally-occurring population of
putative Arisaema triphyllum subsp. stewardsonii x A. dracontium hybrids =in
Massachusetts. Rhodora 94: 340-347.

Two additional botanists, David Bouffourd from Harvard and Keith
Clay from Bloomington, also have suggested this (in correspondence).

In addition, Jin Murata and a student have published allozyme dat=a
that suggest that A. ehimense may be of hybrid origin:

Maki M, Murata J. 2001. Allozyme analysis of the hybrid origin of Arisaem=a
ehimense (Araceae). HEREDITY 86(1): 87-93.

I would be very interested in additional reports.

Susanne Renner

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