[MAIPC] Cuscuta Id Please?

Mon Jul 30 10:55:34 PDT 2018

Hi all,

Again, a word of caution to not target native Dodder (Cuscuta spp.) species.  They are valuable native plants despite how they might appear to the subjective aesthetics of humans.  As with Best Management Practices regarding the control all non-native invasive plant species, a plant should not be removed/treated unless identification is 100% certain that it’s a non-native.

Delaware lists C. epilinum  on its weed list (attached).

Thanks,

___________________________
Rod Simmons
Natural Resource Manager / Plant Ecologist
Natural Resources Division
Department of Recreation, Parks & Cultural Activities
City of Alexandria, Virginia
2900-A Business Center Drive
Alexandria, VA 22314
office phone: 703.746.4651
mobile phone: 703.930.8972
Rod.Simmons at alexandriava.gov<mailto:Rod.Simmons at alexandriava.gov>
http://alexandriava.gov/22560

From: MAIPC <maipc-bounces at lists.maipc.org> On Behalf Of Erik Kiviat
Sent: Monday, July 30, 2018 1:29 PM
To: Mike Van Clef <mike.vanclef at gmail.com>
Cc: MAIPC Board <maipc at lists.maipc.org>
Subject: Re: [MAIPC] Id Please?

Hello Mike, et al.

The dodder I collected at the Kane Natural Area (now mitigation bank) in Carlstadt about 10 yr ago was C. japonica. It has apparently not been seen again there, but who knows. We also found this in 2015 in the Berry's Creek study area not too far away.

As I recall, the first specimen keyed out to C. umbrosa because japonica was not in the keys we had (the usual northeastern floras). There may be a more cosmopolitan Cuscuta key on the Web (?).

If you have a putative umbrosa or japonica specimen, you could ask Mihai Costea <costea at wlu.ca<mailto:costea at wlu.ca>> if he would be willing to look at it - he's a world class dodderologist. You will need a good flowering specimen.

I would not be at all surprised to find C. japonica elsewhere in NJ. FYI, both our Meadowlands specimens had purplish stems rather than the usual doddery yellow or orange.

Best, Erik

From: MAIPC <maipc-bounces at lists.maipc.org> On Behalf Of Mike Van Clef
Sent: Monday, July 30, 2018 1:19 PM
To: Kaufman, Sylvan <sylvan.kaufman at gmail.com>; Kiviat, Erik <kiviat at bard.edu>
Cc: MAIPC Board <maipc at lists.maipc.org>
Subject: Re: [MAIPC] Id Please?

I may or may not just be adding confusion, but Erik Kiviat found an interesting dodder in the New Jersey Meadowlands about a decade ago.  I do not think it was persistent?

Cuscuta umbrosa

The NJ Strike Team lists C. japonica as a "Watch" species.

-Mike

Michael Van Clef, Ph.D.
Stewardship Director, Friends of Hopewell Valley Open Space
Program Director, New Jersey Invasive Species Strike Team
Principal, Ecological Solutions, LLC

Office: 609-730-1560
Mobile: 908-528-6674
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Michael Van Clef, Ph.D.
Stewardship Director, Friends of Hopewell Valley Open Space
Program Director, New Jersey Invasive Species Strike Team
Principal, Ecological Solutions, LLC

Office: 609-730-1560
Mobile: 908-528-6674

On Mon, Jul 30, 2018 at 1:13 PM Mike Van Clef <mike.vanclef at gmail.com<mailto:mike.vanclef at gmail.com>> wrote:
I may or may not just be adding confusion, but Erik Kiviat found an interesting dodder in the New Jersey Meadowlands about a decade ago.  I do not think it was persistent?

Cuscuta umbrosa

The NJ Strike Team lists C. japonica as a "Watch" species.

-Mike

Michael Van Clef, Ph.D.
Stewardship Director, Friends of Hopewell Valley Open Space
Program Director, New Jersey Invasive Species Strike Team
Principal, Ecological Solutions, LLC

Office: 609-730-1560
Mobile: 908-528-6674

On Sun, Jul 29, 2018 at 12:14 PM Sylvan Kaufman <sylvan.kaufman at gmail.com<mailto:sylvan.kaufman at gmail.com>> wrote:
I don't think Japanese dodder has been reported further north than South Carolina on the east coast so far (see  https://www.cabi.org/isc/datasheet/17116<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cabi.org%2Fisc%2Fdatasheet%2F17116&data=02%7C01%7Crod.simmons%40alexandriava.gov%7C05daab32f3a44559f47a08d5f640a32d%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C636685679845344284&sdata=pDP4wC7TEV6agz4F9XhexjVrAeu24rnYsqwN%2B2I63No%3D&reserved=0>).  If you look at photos of it in CA, it covers entire shrubs and trees unlike the native dodders.  Otherwise it is hard to tell it apart from the native dodders as it sometimes doesn't flower and can only be distinguished using DNA analysis.

Sylvan

On Sun, Jul 29, 2018 at 10:03 AM Marian Orlousky <morlousky at appalachiantrail.org<mailto:morlousky at appalachiantrail.org>> wrote:

Does anyone know much about the distribution of Japanese dodder?  When in NJ a few years back, with a field biologist from the NYNJ Trail Conference, she indicated the Cuscuta we were seeing in a wetland area was invasive. I don't see this very often but I did just spot it in Harriman State Park in NY this past week. Wishing I had taken a closer look.

Marian Orlousky
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________________________________
From: MAIPC <maipc-bounces at lists.maipc.org<mailto:maipc-bounces at lists.maipc.org>> on behalf of Rohrbaugh, Andrew <anrohrbaug at pa.gov<mailto:anrohrbaug at pa.gov>>
Sent: Friday, July 27, 2018 11:11:33 AM
To: Rod Simmons; Jonathan Duffy
Cc: <maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>>
Subject: Re: [MAIPC] Id Please?

Agreed, they're very, very difficult to identify to species (you need fruits and flowers and a very fine ruler!)

Andrew Rohrbaugh | Botanist
Pennsylvania Department of Conservation & Natural Resources
Bureau of Forestry | Ecological Services Section
PO Box 8552, 400 Market St, Harrisburg, PA 17105-8552
Phone: 717.705.2823 | Fax: 717.772.0271
anrohrbaug at pa.gov<mailto:anrohrbaug at pa.gov>
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-----Original Message-----
From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Rod Simmons
Sent: Friday, July 27, 2018 11:07 AM
To: Jonathan Duffy <jrd at kinlochfarm.com<mailto:jrd at kinlochfarm.com>>
Cc: <maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>> <maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>>
Subject: Re: [MAIPC] Id Please?

It’s Cuscuta - a valuable native species.  Probably C. campestre.

Sent from my iPhone

> On Jul 27, 2018, at 11:05 AM, Jonathan Duffy <jrd at kinlochfarm.com<mailto:jrd at kinlochfarm.com>> wrote:
>
> Any idea what this might be? It is very localized and along a drainage ditch.
>
> Thanks, Jonathan Duffy
>
>
> <IMG_0748.jpeg><IMG_0752.jpeg>
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