English: New leaves of tulip poplar tree (Liriodendron tulipifera). Not only do the leaves have a distinctive, twofold symmetrical shape, but they first emerge neatly folded in half. Here, the top leaf is still fully doubled over, the left leaf partly folded down the center, and the lower left leaf fully open but still small and light green. At center and bottom are a few remaining leaf bracts, now pink-tinged. Topping the smooth-barked twig is a reddish winter bud, and below an early, still-narrow flower bud with double bract. Duke Forest Korstian Division, Durham, North Carolina USA.