English: Youtan poluo, mostly mistaken as lacewings eggs, is one of the rarest flowers in the world and has an interesting myth around its growth. This delicate flower is believed to bloom once in 3000 years and is said to mark the arrival of a royal king. According to Buddhist scriptures, these flowers are a symbol of immortality and reincarnation of Buddha. The local name for this rare flower, in China, is Udumbara. Udumbara, in Sanskrit, means an auspicious flower descending from the heaven and these mysterious flowers omit a distinct fragrance of sandalwood.