Labiate, composite and umbelliferous plants are most common. The mericarps (one carpel of umbelliferous fruit) have acute edges and five, rather low ridges. It is the first umbelliferous plant found to produce exudate flavonoids. It has a small, yellow, umbelliferous inflorescence that is produced throughout the year. Umbelliferous plants are so named because of the umbrella-like arrangement of flowers they produce.