Mimosa (Silk Tree)
A small tree with widely spreading branches, a short trunk and a broad, flat-topped crown.
Leaves alternate, twice-pinnately compound (fernlike), 6–20 inches long, the pinnae (first division) branches 2–6 inches long, the leaflets about 1/2 inch long, lacking teeth but with hairs along the edges. Leaves emerge in spring.
Bark smooth, tight, blotched gray and sometimes brownish on young growth; pores large and conspicuous.
Twigs moderately stout, green to brown or gray, somewhat fluted below nodes (where leaves attach), often zigzag, smooth; pores small, numerous.
Flowers May–August (after leaves emerge), on tips of branches, pink, crowded in tassel-like round heads, 1 1/2 inches across; fragrance is strong and sweet.
Fruits August–September; pods are flat, linear, yellowish-brown, 5–8 inches long, forming large clusters; seeds are flat, light brown, oval, about 1/2 inch long.