<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Hello All, <br><br>I don't usually make comment to this group....I generally browse this list to see what new issues are popping up. As a biologist/ecologist/naturalist/land manager for 31 years in the Chicago area with the Forest Preserve District of Cook County, I have seen this plant come and go. Deer do browse it heavily and tend to prefer it over most other plants. It does well in disturbed areas where the soil is rich, moist and semi shaded. I have always viewed it as sensitive plant that is easily displaced by weeds and never thought of it as a problem plant in the Chicago area. The fact that it is spreading prolifically in other areas where it typically does not occur could be a symptom of a bigger problem. I would expect it to disappear when those
problems are discovered and solved. <br><br>Wayne Vanderploeg<br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> "Maze, Dominic" <Dominic.Maze@portlandoregon.gov><br><b><span style="font-weight: bold;">To:</span></b> Katie Fite <katie@westernwatersheds.org>; "apwg@lists.plantconservation.org" <apwg@lists.plantconservation.org><br><b><span style="font-weight: bold;">Sent:</span></b> Tue, July 19, 2011 11:42:18 AM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [APWG] Jewelweed<br></font><br>
<title>Jewelweed</title>
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<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Hi Katie et alia,</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> <i><span style="font-style: italic;">Impatiens capensis</span></i> is, in my experience, a problematic
species here west of the Cascade Range in the
Pacific NW. The densities of this sp. are pretty amazing with the
understory of riparian corridors often dominated by it. I’ve been seeing
more and more of it in the Willamette
Valley and surrounding ranges here in
Oregon with seemingly
little attention paid to it.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> Interestingly, some land managers
still consider this species native here on the West Coast, probably due to
confusion with our native, <i><span style="font-style: italic;">I.</span></i><i><span style="font-style: italic;">
ecalcarata</span></i> in some older floras and field guides. Ed Alverson
of TNC wrote a short comment in reply to a posting on <i><span style="font-style: italic;">I.</span></i><i><span style="font-style: italic;"> capensis</span></i> at the Botany Photo of the Day website:</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><span class="apple-style-span"><font color="#333333" face="Arial Narrow" size="3"><span style="font-size: 12pt; font-family: "Arial Narrow"; color: rgb(51, 51, 51);">“Impatiens capensis is an introduced and invasive species in the
Pacific Northwest , west of the Cascades. Peter
Zika addressed this issue in a 2006 paper, "The status of Impatiens
capensis (Balsaminaceae) on the</span></font></span><font color="#333333" face="Arial Narrow"><span style="font-family: "Arial Narrow"; color: rgb(51, 51, 51);"><br>
<span class="apple-style-span">Pacific Northwest coast", published in the
Journal of the Torrey Botanical Club, vol. 133 pp. 593-600. In fact, I.
capensis is spreading into the habitats of the uncommon native
I. ecalcarata west of the Cascades, and the two species
are hybridizing. This has created a situation where the native species is
potentially being out-competed by both the introduced species and by their
hybrids. Zika has published another paper on the hybrid, which he has named
Impatiens x pacifica , see "Impatiens x
pacifica (Balsaminaceae),
a New Hybrid jewelweed from the Pacific Northwest Coast of North America",
Novon vol. 16, pp. 443-448, 2006.</span>”</span></font></p>
<p class="MsoNormal"><span class="apple-style-span"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></span></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Add this spp. to <i><span style="font-style: italic;">I. glandulifera</span></i> (a big problem) and
<i><span style="font-style: italic;">I.</span></i><i><span style="font-style: italic;"> balfourii</span></i> (an escaping species which may
be a problem in the future), and we’ve got our hands full out here with the touch-me-nots.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<div>
<p class="MsoNormal" style="margin-left: 0.5in;"><b><font color="green" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: green; font-weight: bold;">Dominic Maze</span></font></b><font color="green" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: green;"> | </span></font><font color="gray" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: gray;">Invasive Species Coordinator </span></font><font color="navy" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: navy;"></span></font></p>
<p class="MsoNormal" style="margin-left: 0.5in;"><font color="gray" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: gray;">City
of </span></font><font face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri;">
<font color="gray"><span style="color: gray;">Portland</span></font><font color="gray"><span style="color: gray;"> Environmental Services</span></font></span></font></p>
<p class="MsoNormal" style="margin-left: 0.5in;"><font face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri;">
<font color="gray"><span style="color: gray;">1120 SW 5th Avenue</span></font><font color="gray"><span style="color: gray;">, Room 1000</span></font></span></font></p>
<p class="MsoNormal" style="margin-left: 0.5in;"><font face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri;">
<font color="gray"><span style="color: gray;">Portland</span></font><font color="gray"><span style="color: gray;">, </span></font>
<font color="gray"><span style="color: gray;">Oregon</span></font><font color="gray"><span style="color: gray;"> </span></font>
<font color="gray"><span style="color: gray;">97204</span></font><font color="gray"><span style="color: gray;"></span></font></span></font></p>
<p class="MsoNormal" style="margin-left: 0.5in;"><font color="gray" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: gray;">p:
(503) 823-4899</span></font></p>
<p class="MsoNormal" style="margin-left: 0.5in;"><font color="gray" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: gray;">f:
(503) 823-5344</span></font><font color="navy"><span style="color: navy;"></span></font></p>
<p class="MsoNormal" style="margin-left: 0.5in;"><font color="gray" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: gray;"><a rel="nofollow" ymailto="mailto:dominic.maze@portlandoregon.gov" target="_blank" href="mailto:dominic.maze@portlandoregon.gov">dominic.maze@portlandoregon.gov</a></span></font><font color="gray" face="Calibri" size="2"><span style="font-size: 10pt; font-family: Calibri; color: gray;"></span></font></p>
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<p class="MsoNormal"><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;">
apwg-bounces@lists.plantconservation.org
[mailto:apwg-bounces@lists.plantconservation.org] <b><span style="font-weight: bold;">On Behalf Of </span></b>Katie Fite<br>
<b><span style="font-weight: bold;">Sent:</span></b> Monday, July 18, 2011 5:46
PM<br>
<b><span style="font-weight: bold;">To:</span></b>
apwg@lists.plantconservation.org<br>
<b><span style="font-weight: bold;">Subject:</span></b> [APWG] Jewelweed</span></font></p>
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<p class="MsoNormal"><font face="Calibri" size="2"><span style="font-size: 11pt; font-family: Calibri;"><br>
Has anyone had any experience with jewelweed (Impatiens) native to the eastern U.
S. becoming weedy in valley marsh habitats in the intermountain West? <br>
<br>
I see that jewelweed <i><span style="font-style: italic;">Impatiens capensis</span></i>
(orange jewelweed) is listed as a King County (WA) “Weed of Concern”. <br>
<br>
This species is shown as having a yellow flowered form, which is what we are
seeing.<br>
<br><span>
<a target="_blank" href="http://www.kingcounty.gov/environment/animalsAndPlants/noxious-weeds/laws/list.aspx">http://www.kingcounty.gov/environment/animalsAndPlants/noxious-weeds/laws/list.aspx</a></span><br>
<br>
Katie Fite<br>
Western Watersheds Project<br>
<a rel="nofollow">katie@westernwatersheds.org</a><br>
<br>
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