Adam Fikso adam14113@ameritech.net
Wed, 07 Apr 2010 14:57:47 PDT
How about "liberally encroaching?  
.,  And re the definition, Boyce--  can you specify the legal parameters so we can learn how not to use the term?    

----- Original Message ----- 
From: "Boyce Tankersley" <btankers@chicagobotanic.org>
To: "Pacific Bulb Society" <pbs@lists.ibiblio.org>
Sent: Wednesday, April 07, 2010 3:35 PM
Subject: Re: [pbs] Looking for other blue Hyacinthaceae - ID needed

> Hi All:
> Please be careful when using the term 'invasive'. It carries legally
> defined/regulatory connotations linked to documented negative impacts on
> native plants in undisturbed natural areas. 
> So far, our experience at CBG is that Scilla sibirica does not invade
> natural habitats. It does however, persist around old farmsteads and it
> does reseed in gardens and other cultivated (roadsides for instance)
> areas, but not the natural habitats.
> I believe Mary Sue covered a similar topic (invasive versus persistent
> plants) a few weeks ago regarding the California region.
> Many thanks,
> Boyce Tankersley
> Director of Living Plant Documentation
> Chicago Botanic Garden
> 1000 Lake Cook Road
> Glencoe, IL 60022
> tel: 847-835-6841
> fax: 847-835-1635
> email: btankers@chicagobotanic.org
> The S. sibirica is invasive in the Chicago area  UZDA Z 5a--on its way
> to 6
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