[MAIPC] Unknown shrub Kolkwitzia perhaps

Fri Aug 11 07:59:20 PDT 2017

Thank you!

On Fri, Aug 11, 2017 at 9:09 AM, Muth, Norris (MUTH) <MUTH at juniata.edu>
wrote:

> Tim Block did us a huge service and looked at the Morris Arboretum's
> collections of Philadelphus and Kolkwitzia to see if there were any
> leaf/stem traits that could distinguish between the two. Here’s what he
> came up with – and by this method it would seem that Mark’s specimens are
> more consistent with Philadelphus.
>
> From Tim:
> Good morning, Norris:
>
> The easiest way to tell Kolkwitzia from Philadelphus vegetatively is to
> look for the axillary buds.  The buds of Philadelphus are buried in the
> base of the petiole, while those of Kolkwitzia are readily evident (see
> photos).
>
> Other than that, I can't see much in the way of consistently applicable
> characters.  But, this one appears completely consistent across all species
> of Philadelphus.  Of course, there is only one species of Kolkwitzia.
>
> Tim
>
> Timothy A. Block, Ph.D.
> The John J. Willaman Chair of Botany
> Morris Arboretum of the University of Pennsylvania
> 100 East Northwestern Avenue
> Philadelphia, PA 19118
>
> Mark’s specimens can be seen here:
> http://lists.maipc.org/pipermail/maipc-maipc.org/
> attachments/20170807/a780011e/attachment-0002.jpeg
> http://lists.maipc.org/pipermail/maipc-maipc.org/
> attachments/20170807/a780011e/attachment-0003.jpeg
>
> —
>
> Norris Z. Muth, Ph.D.
>
> Associate Professor, Biology
>
> Office: 814-641-3632 | 1054 VLB
>
> Juniata College
>
> 1700 Moore Street
>
> Huntingdon, PA 16652
>
> muthlab.org<http://muthlab.org> | NativePlantAdvocate.org<http:/
> /NativePlantAdvocate.org>
>
>
> From: <Foster>, Donna M -FS <donnamfoster at fs.fed.us<mailto:
> donnamfoster at fs.fed.us>>
> Date: Wednesday, August 9, 2017 at 4:10 PM
> To: Mark Frey <runcator at gmail.com<mailto:runcator at gmail.com>>, Art Gover <
> aeg2 at psu.edu<mailto:aeg2 at psu.edu>>
> 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] Unknown shrub Kolkwitzia perhaps
>
> I say it is closest to Kolkwitzia amabilis per Michael Dirr (although I
> have never seen it either). Looks like a Philadelphus in the first photo,
> but definitely not per the second photograph. It’s woody so I doubt it is a
> Persicaria.
>
> [Forest Service Shield]
>
> Donna Marie Foster
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>
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> Northeastern Area State and Private Forestry
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>
> From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Mark Frey
> Sent: Monday, August 07, 2017 8:46 AM
> To: Art Gover <aeg2 at psu.edu<mailto:aeg2 at psu.edu>>
> Cc: maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>
> Subject: Re: [MAIPC] Unknown shrub Kolkwitzia perhaps
>
> Thanks all - I am convinced!
>
> On Mon, Aug 7, 2017 at 8:41 AM, Art Gover <aeg2 at psu.edu<mailto:aeg2 at psu.
> edu>> wrote:
> I'm with Norris.  Mockorange.
>
> Be well.
>
> Art
>
> Penn State Wildland Weed Management
> (814) 863-9904
>
> Sent from my phone.
>
>
>
> > On Aug 7, 2017, at 08:37, Muth, Norris (MUTH) <MUTH at juniata.edu<mailto:
> MUTH at juniata.edu>> wrote:
> >
> > Looks a bit like mock orange.
> >
> > NZ Muth
> > Associate Professor of Biology
> > Juniata College
> >
> >
> >
> >> On Aug 7, 2017, at 8:30 AM, Mark Frey <runcator at gmail.com<mailto:run
> cator at gmail.com>> wrote:
> >>
> >> All
> >>
> >> I saw this shrub yesterday and I can't figure out what it is. I first
> thought it was Deutzia scabra but the leaf teeth don't look right. Another
> option is Kolkwitzia amabilis - it has been on my radar but I don't think I
> have never seen that plant in person.
> >>
> >> It is opposite, ovate, up to 3 inches long, with a few sparse teeth,
> long tip and with arching stems.
> >> The specimens I saw were no taller than 2 feet. However, it is an area
> that may have been recently mowed.
> >>
> >> Any tips would be much appreciated.
> >>
> >> Mark Frey
> >> <IMG_1026.JPG>
> >> <IMG_1027.JPG>
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