1. The genus includes the familiar common daisy " Bellis perennis ". 2. This followed a previous incident in which the Perennis , the prior administrator. 3. In 185 Sextus Tigidius Perennis , governor of Lusitania, visited the region. 4. Its title derives from the theological tradition of the " philosophia perennis ". 5. Some aquatic flowers, such as the daisy Bellis perennis , use compliance as a survival mechanism. 6. Under the latter, Perennis was the man who exercised the chief responsibilities of government in the Roman Empire. 7. "' Sextus Tigidius Perennis "'( died 185 ) was a emperors Marcus Aurelius and Commodus. 8. They are North American natives, although only one, Lupinus perennis , hails from the eastern half of the continent. 9. This is because the petals ( of " Bellis perennis " ) open at dawn and close at dusk. 10. The cultivar " Bellis perennis "'Aucubifolia'is a golden-variegated horticultural selection of this species.