<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I agree with the findings. I have noticed these whitish patches on old lilac stems and have followed them for years. They do eventually develop into lichen growth.<div><br></div><div>Gail Rankin, B. Sc.</div><div>Rankin Horticulture Consulting Inc</div><div>Edmonton, AB<br><div><div>On Jan 8, 2013, at 7:19 AM, Shields, Peter wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="auto"><div>I saw that article which confirmed what Mark and James wrote. Good stuff.<br><br><div>Thanks</div>Peter Shields<div>Consulting Arborist</div><div>Davey Resource Group</div></div><div><br>On 2013-01-08, at 9:17 AM, "Brian Geerts" <<a href="mailto:GeertsB@cambridge.ca">GeertsB@cambridge.ca</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<div class="Section1"><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">We have had a number of inquiries about
this in our area as well. There’s also a write-up in the Orillia Packet here:<o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><a href="http://www.orilliapacket.com/2012/04/30/local-science-and-nature">http://www.orilliapacket.com/2012/04/30/local-science-and-nature</a><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<div><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Brian Geerts</span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Manager of Forestry</span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">City of <st1:city w:st="on"><st1:place w:st="on">Cambridge</st1:place></st1:city></span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Dickson Centre</span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><st1:street w:st="on"><st1:address w:st="on"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;
color:navy">30 Parkhill Road W.</span></font></st1:address></st1:street><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;
color:navy"> ON N1R 5W8</span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Calibri"><span style="font-size:
11.0pt;color:navy"> <o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><a href="mailto:geertsb@cambridge.ca">geertsb@cambridge.ca</a></span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Calibri"><span style="font-size:
11.0pt;color:navy"> <o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Tel:519.740.4681 x4558</span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Fax: 519.624.6975</span></font><font color="navy"><span style="color:navy"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Calibri"><span style="font-size:
11.0pt;color:navy"> <o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" color="navy" face="Calibri"><span style="font-size:
11.0pt;color:navy"> </span></font><o:p></o:p></p>
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</span></font></div><p class="MsoNormal"><b><font size="2" face="Tahoma"><span style="font-size:10.0pt;
font-family:Tahoma;font-weight:bold">From:</span></font></b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma">
<a href="mailto:canufnet-bounces@list.web.net">canufnet-bounces@list.web.net</a> [<a href="mailto:canufnet-bounces@list.web.net">mailto:canufnet-bounces@list.web.net</a>] <b><span style="font-weight:bold">On Behalf Of </span></b>Shields, Peter<br>
<b><span style="font-weight:bold">Sent:</span></b> Sunday, January 06, 2013
3:56 PM<br>
<b><span style="font-weight:bold">To:</span></b> Canadian Urban Forest Network
(<a href="mailto:canufnet@list.web.net">canufnet@list.web.net</a>)<br>
<b><span style="font-weight:bold">Subject:</span></b> [CANUFNET] White Blotches
on Maples solved</span></font><font size="3" face="Times New Roman"><span style="font-size:12.0pt;font-family:"Times New Roman""><o:p></o:p></span></font></p>
</div><p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p><p class="MsoNormal"><font size="2" face="Times New Roman"><span style="font-size:
11.0pt;font-family:"Times New Roman"">With many responses to the original post,
I believe this one form M. Burleton and J. Brown at NCC in <st1:city w:st="on"><st1:place w:st="on">Ottawa</st1:place></st1:city> have solved the problem. Thanks
Mark and James! I have quoted their response with their permission below.
Perhaps a submission to Detective Dendro one year!<o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" face="Times New Roman"><span style="font-size:
11.0pt;font-family:"Times New Roman""><o:p> </o:p></span></font></p><p class="MsoNormal"><font size="2" face="Times New Roman"><span style="font-size:
11.0pt;font-family:"Times New Roman"">“<i><span style="font-style:italic">The
best case scenario I have so far is the un-lichenized fungus <b><span style="font-weight:bold">Julella fallaciosa</span></b> or <b><span style="font-weight:bold">white stain fungus</span></b>. This isn't a algae
partnership to make it a true lichen. It is a crust (crustose), type of
structure this why you didn't find filament edges or scaly edges, you can find
in other tree inhabiting species. <o:p></o:p></span></i></span></font></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic"><o:p> </o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic">As you
know lichens are composite organisms consisting of a symbiotic association of a
fungus and a green algae living together. Lichens do not generally harm the
tree or other living matter that they a growing on-they obtain their mineral
nutrients from the air. <o:p></o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic"><o:p> </o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic">In
some cases of the filmentose types may create heavier branches and in a storm
and could be more likely to fail because the extra weight. Growth can seem to
be stunted by heavy amounts of these lichen, but it is usually on weaker or
slower growing trees. I have seen this happen on the west coast and in <st1:country-region w:st="on"><st1:place w:st="on">Scotland</st1:place></st1:country-region>.<o:p></o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic">
<o:p></o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic">White
stain fungus, is a "nearly" lichen, and many fungi apparently, have
acquired this mode of life. <o:p></o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic"><o:p> </o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic">I
looked to see if fungi or lichens in my many reference books, searching though
a few internet sites and it came out to same type of lichen like
fungus. <o:p></o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic"><o:p> </o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic">This
could be the first part of the association of a lichen with the white stain
fungus growing on the maple and looking for an algae associate.<o:p></o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic"><o:p> </o:p></span></font></i></p><p class="MsoNormal"><i><font size="2" face="Times New Roman"><span style="font-size:11.0pt;font-family:"Times New Roman";font-style:italic">In
most cases the white patches are just the white stain fungus looking to become
a lichen and although unsightly, I don't believe it harm or kill maples. In my
woodlot at home, it is present on my young and mature sugar and black maples. I
haven't seen any detrimental effects to them in 16yrs.”</span></font></i><font face="Times New Roman"><span style="font-family:"Times New Roman""> <o:p></o:p></span></font></p><p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt;font-family:"Times New Roman""><o:p> </o:p></span></font></p><p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt;font-family:"Times New Roman"">Peter Shields <o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" face="Times New Roman"><span style="font-size:
10.0pt;font-family:"Times New Roman"">Senior Consulting Arborist</span></font><font size="3" face="Times New Roman"><span style="font-size:12.0pt;font-family:"Times New Roman""><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" face="Times New Roman"><span style="font-size:
10.0pt;font-family:"Times New Roman"">ISA BCMA ON-0570B, ISA PNW CTRA #1590,
OMNR BHA #252, ASCA member<o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" face="Times New Roman"><span style="font-size:
11.0pt;font-family:"Times New Roman"">(905) 274-8300</span></font><font face="Cambria"><span style="font-family:Cambria"><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><image001.jpg><o:p></o:p></span></font></p><p class="MsoNormal"><font size="2" face="Calibri"><span style="font-size:11.0pt"><o:p> </o:p></span></font></p>
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</o:smarttagtype></o:smarttagtype></o:smarttagtype></o:smarttagtype></o:smarttagtype></div></blockquote></div></blockquote></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><div>Gail Rankin</div><div>Rankin Horticulture Consulting Inc.</div><div><a href="mailto:ranking@shaw.ca">ranking@shaw.ca</a></div><div><br></div></div></span><br class="Apple-interchange-newline">
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