Since the last few posts have been about Central Park Zoo, I'll stay there for a bit longer, at least to talk about Halesia tetraptera, or Carolina silverbell.
Carolina silverbell is a small understory flowering tree that can ultimately reach a size of 30-40 feet (there's a larger one on the north side of Central Park bandshell, too). It has a lemony fall color that is evident in these photos, and in mid-spring the plant is covered with white bell-shaped flowers.
But today, and even after the leaves have fallen, the notable characteristic that remains is the seedpods. Tetraptera literally means four-winged and refers to the four flattened corners of the seedpod. Halesia is named for a botanist, Stephen Hales.