Re: I. pseudacarus
- Subject: Re: I. pseudacarus
- From: B* S*
- Date: Mon, 16 Nov 1998 09:32:28 -0400
From: Bill Shear <BILLS@hsc.edu>
Just a personal observation: at the pond behind the building where I work,
there is a single clump of pseudacorus. It has not spread despite copious
seed production. However, I. versicolor, which first appeared as single
plant some 10 years ago, now has numerous clumps around the pond margin.
The I. virginica, LA hybrids, I. xrobusta, and versatas I planted there
likewise have not spread.
I suspect that the dangers of pseudacorus becoming invasive decrease as one
moves south, into less favorable territory for, perhaps, seed germination.
Pseudacorus has been around and about New England for centuries, with no
comments (so far as I know--which isn't very far) on its invasiveness. In
Texas it would no more be an alien weed than would versicolor.
Bill Shear
Department of Biology
Hampden-Sydney College
Hampden-Sydney VA 23943
(804)223-6172
FAX (804)223-6374
email<bills@hsc.edu>
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