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Mean number of visits per flower per hour (Vf), pollinator assemblage composition, and relative contribution of the pollinator species to the total number of visits recorded in five populations of N. linariifolia during two years. Populations are ordered by geographic proximity. Key: white for pollen-collecting bees; light grey and hatched grey for small- and medium-sized oil-collecting bees, respectively; dark grey and black for large-sized oil-collecting bees.
