Aster (Daisy) family (Asteraceae)
Natural History: This plant, while native to Illinois, is not that common in native habitats. In fact, most of the plants that grow in the wild are escaped cultivars or as a result of prairie restoration efforts. On my ride, there were only small clusters or small groups of individuals but I was determined to collect a few for my daughter, who loves pink flowers. It has only a faint smell. The stem is strong and rigid and the seed head is heavy. The petals are smooth on top, rough on bottom, and damaged with black spots from insect or impact damage. The top of the flower head is a collection of small spines, which is why it was named after the latin name for "hedgehog." The spines are packed closely in the Fibonacci spiral formation, which allows for radiating growth.
Biomimicry Inspiration: I wonder what a seating arrangement in a restaurant, theater in the round, or other establishment where many people must be placed would look like if we tried to emulate this radiating pattern? Would its allowance for growth allow the seating arrangement to grow and contract as needed depending on how many people need to be seated? Would this pattern be relevant to temporary disaster shelter camps as well?