|Tree of Heaven|
Tree of Heaven is native to China and is a well behaved and welcome plant there. There it is used for wood, medicine, and as a host plant for silkworms. I guess it just depends on your point of view.
|Note that the leaflets have a couple of pairs of teeth near the base. These teeth have little glands which have no apparent purpose.|
|The seed samaras are pretty, colored in greens, pinks and reds. They have a little twirl at the tip, probably an aid to cause it to flutter farther away from the tree as it floats to the ground.|
|The twig is very stout. The leaf scars are shield shaped|
|Note the numerous vein scars, the little dots around the inside edge of the leaf scar|
|The brown pith is more than half the diameter of the twig|