[MAIPC] Incised fumewort infestations can be really bad

[Jeffrey Branham]

I'm relatively new to the area, but its all over Philadelphia, particularly
in the Wissahickon Gorge.  As far as I know, its not really prevalent in NJ
which is a wonder because we've got every other invasive species.  Seems
like its only a matter of time..

On Thu, Apr 27, 2023 at 10:26 AM Ossi, Damien (DOEE) <damien.ossi at dc.gov>
wrote:

> Hi folks,
>
>
>
> If you’re like me, you have not been aware of the rapid growth of incised
> fumewort in the past few years.  Under Sara Tangren’s leadership the Nat
> Cap PRISM started tracking it this spring with our network of Invader
> Detectives.
>
>
>
> It’s…everywhere, and it appears to be outcompeting or outright killing
> bluebells wherever they occur together.  USDA’s weed risk assessment for
> this species found no evidence for allelopathy in field tests, but that had
> high uncertainty.
>
>
>
> Please click on the iNatualist entry below and look at the images.  It
> appears to occupy 1+ acres in Seneca Creek State Park in Montgomery
> County.  This is the largest population that we have found this year, but
> it appears to go from a few plants to a large population in only two or
> three seasons.
>
>
>
> Have you been tracking this plant in your area?
>
>
>
> Damien
>
>
>
> *Damien Ossi*
>
> *Wildlife Biologist*
>
> Fisheries and Wildlife Division
>
> Department of Energy and Environment
>
> 202-741-0840
> damien.ossi at dc.gov
>
>
>
> *From:* invaderdetectives at googlegroups.com <
> invaderdetectives at googlegroups.com> *On Behalf Of *Tangren, Sara (DOEE)
> *Sent:* Monday, April 17, 2023 11:36 AM
> *To:* invaderdetectives at googlegroups.com
> *Subject:* [InvaderDetectives] incised fumewort infestations can be
> really bad
>
>
>
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>
>
> Hi All,
>
>
>
> I’ve spent the last week helping combat an infestation at Hemlock Overlook
> Park (Bull Run watershed, VA). The appearance of what is going on there
> suggests that the plants are allelopathic, but only scientific tests could
> tell us for sure. To see the bluebells, violets, and spring beauties being
> overrun was heartbreaking. It took only 3 years to go from first
> observation to serious ecological damage and first response. We’ve got to
> react to this species more quickly from here on out.
>
>
>
> Today I’m catching up on iNat reviews and came across this one by our own
> esummerbell. Her photos do an excellent job of capturing just how bad
> incised fumewort can get, please have a look.
>
> Incised Fumewort (Corydalis incisa)
> <https://www.inaturalist.org/observations/155117633>
>
> inaturalist.org <https://www.inaturalist.org/observations/155117633>
>
>
>
> I think we need to have a meeting this winter and develop a region wide
> (or nationwide) management plan, something large scale.
>
>
>
> Best,
>
> Sara
>
>
>
>
>
>
>
>
>
> Sara A. Tangren, Ph.D.
> Coordinator
> National Capital PRISM
> Department of Energy & Environment
> Government of the District of Columbia
> 1200 First Sreet NE, Fifth Floor
> Washington, DC 20002
> sara.tangren at dc.gov
>
>
>
>
>
>
>
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-- 
Cheers,
  JB
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