Possible Clues:

• Flower — one covering centre of vessel
• Mafia's rise includes death, bud
• Spring flowers in over-the-top Mafia wreath for bereavement
• Develop nicely
• Flowers brought by crowd upset about death
• Flourish pounds and shillings found separately in chest
• Wanting to flourish, fail endlessly, admitting defeat
• Deprivation stops most of mine? May, possibly
• May, perhaps, honour after British defeat
• Charged item almost consuming deficit, so thrive