Goldenrod Bunch/Rosette Gall - caused by a tiny Midge laying an egg at the tip of the plant.
http://bugguide.net/node/view/10485
BugGuide says:
"The female deposits an egg at the tip of the growing plant. Its larva secretes a chemical that prevents the goldenrod stem from growing although it continues to produce leaves, thus a shortened bunch of leaves is formed."
- A close look at the picture shows the flowering stems continuing to grow - this is not uncommon.
https://bugtracks.wordpress.com/2013/02/21/goldenrod-rosette-galls-part-3/#comment-11006
BugGuide says:
"The female deposits an egg at the tip of the growing plant. Its larva secretes a chemical that prevents the goldenrod stem from growing although it continues to produce leaves, thus a shortened bunch of leaves is formed."
- A close look at the picture shows the flowering stems continuing to grow - this is not uncommon.
https://bugtracks.wordpress.com/2013/02/21/goldenrod-rosette-galls-part-3/#comment-11006
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