Date: Mon, 30 Oct 2000 10:15:02 +1100 From: Miguel de Salas <mm_de@postoffice.utas.edu.au> To: cp@opus.hpl.hp.com Message-Id: <aabcdefg3152$foo@default> Subject: Re: What is D. schizandra?
At 02:47 PM 28-10-2000 -0700, you wrote:
>Dear List,
>
> Of all the Drosera, schizandra seems to me to be sort of...
> unsure what shape it's leaves should be. Almost like it's
> confused. The lamia is wavy, unlike any other Drosera I'm
> familar with. But the wavyness doesn't appear to have a
> consistent pattern from leaf to leaf. I don't know what to make
> of it. I think it was Ivan who mentioned that he though D.
> schizandra might be a hybrid between D.adelae and D. prolifera.
> I can sort of see that, but wouldn't there then be a lot more
> diversity than what D. schizandra shows?
>
Hi Dave and others,
If D. schizandra arose as a single hybrid of D. adelae and D. prolifera,
which became tetraploid and had its fertility restored, thus becoming
reproductively isolated from the parents (i.e. a different species), there
need not necessarily be much variability, expecially if this occurred a
while ago.
Some points to take into account:
Most forms of this species in horticulture probably arose from a very
limited number of collections (maybe even one), which would severely limit
variability.
Checking the ploidy (chromosome number) of D. schizandra and comparing it
with D. adelae and D. prolifera might give some insight.
Cheers!
Miguel de Salas
mailto:mm_de@postoffice.utas.edu.au
School of Plant Science,
University of Tasmania,
GPO Box 252-55, Hobart,
Tasmania, Australia, 7001.
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