Oak apple galls grow to the size of a medium apple and has a green skin when it first forms. Later this skin turns papery tan. When you cut it open this gall contains becomes a mass of fibers and contains small areas which looks like seeds but is actually the larvae in a central cell. This gall causes very little damage to the oak tree.
Oak apple galls grow to the size of a medium apple and has a green skin when it first forms. Later this skin turns papery tan. When you cut it open this gall contains becomes a mass of fibers and contains small areas which looks like seeds but is actually the larvae in a central cell. This gall causes very little damage to the oak tree. Bob Embleton (Creative Commons)
Oak apple galls grow to the size of a medium apple and has a green skin when it first forms. Later this skin turns papery tan. When you cut it open this gall contains becomes a mass of fibers and contains small areas which looks like seeds but is actually the larvae in a central cell. This gall causes very little damage to the oak tree. Bob Embleton (Creative Commons)

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