oak trees

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Old 07-17-00, 11:46 PM
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I have an oak tree in my yard and have a question about a possible pest/disease. It's actually on a tree at work. It's also an oak and has developed what appears to be pinkish, waxy-looking, 3-d stars on the underside of it's leaves. They almost look like the stars I make when decorating a cake. There can be as many as 10 crowded on one leaf. They have a firm texture when broken apart like a cactus but dry. I've looked up info on oak trees but haven't came across anything like this under pests/diseases. Is it a normal thing?
 
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Old 07-19-00, 04:47 PM
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Do you live on the West Coast? There is an excellent book by Dr. Glenn Keator called The Life Of an Oak. It has pictures of oak galls and your description matches one type of gall. I am not an expert on oaks, but if you are curious, you might want to check out this book.
 
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Old 07-24-00, 11:24 PM
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thanks, I'll see if I can find the book. I had a feeling it was a gall but I couldn't find anything that looked like it on the internet sites I tried.
 
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