title: Why bother with nectar?
authors.forename: N
authors.initials: N
authors.lastname: Williams
mesh_terms: D000818:Animals; D001516:Bees / Q000502:physiology*; D005060:Europe; D029595:Orchidaceae / Q000502:physiology*; D018514:Plant Structures / Q000378:metabolism*; D011058:Pollen / Q000378:metabolism