Nuphars japonica var. rubrotincta ( Nuphar )
The more than thirty species of Nuphar , all distributed throughout the northerly cerebral hemisphere , include the common yellow-bellied water lily , moo-cow lily or Nuphar advena of North America and brandy bottle of Eurasia . Hardy perennials , they can be planted spring or summertime , and year round in zone 8 to 10 . They thrive in various spot , from flowing water system to moribund consortium , from weewee only a few inch deep to 8 feet thick , from full sun to full shade ....