Flowers of Mesembryanthemum protect their gametes from night - time dews or frosts but open in sunlight .
Mesembryanthemum is a genus of flowering plants in the family Aizoaceae ; like many members of this family , it is characterized by long - lasting flower heads .
Flowers of genus protect their gametes from night - time dews or frosts but open in sunlight .
Mesembryanthemum is a genus of flowering plants in the family Aizoaceae ; like many members of this family , it is characterized by long - lasting flower heads .