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Hi Steve & All, Oct 17, 2007
Milky leaf sap is a quick way to distinguish Norway Maple from
look-alikes. During the growing season, a Norway Maple leaf petiole base
will 'bleed' copious milky sap if the leaf is bent back so that the
petiole breaks away from the stem at the abscission layer.
I just checked our leaves and about 1/3 of them will still bleed
faintly; as white dots (that can be brushed away) where the vascular
bundles are.
Yt, Dave Webster, Kentville
Stephen Shaw wrote:
> Jim, About a week ago I first noticed these prominent 'tar spots'
> marking the
> leaves on a couple of the maples in our garden in Halifax, sometimes
> at high
> density. Never noticed them in previous years. Type of maple? -- not
> sure if
> Norway or not.
> Steve
>
> Quoting Jim Wolford <jimwolford@eastlink.ca>:
>
>> I'd be interested to hear from you all about where else this fungus
>> is being
>> seen on Norway Maples (and other species?). For a nice photo, go to
>> NovaNewsNow.com Web-site, choose the Advertiser icon, then search "tar
>> spots" for the article and photo.
>> Cheers from Jim in Wolfville
>
>
>
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