Matricaria chamomilla (synonym: Matricaria recutita), commonly known as chamomile (also spelled camomile), Italian camomilla, German chamomile, Hungarian chamomile (kamilla), wild chamomile or scented mayweed is an annual plant of the composite family Asteraceae. M. chamomilla is the most popular source of the herbal product chamomile.
Chamomile blue refers to chamazulene, the purified, deep-blue essential oil derived using steam distillation, rather than the plant itself.