1809-1882 allergy animals bears biodiversityconservation botany caryophyllaceae(pink) charles darwin development ecophysiology fertilizationofplants flowering flowers fruit gardeningtoattractwildlife history insect-plantrelationships insects nuttrees orchids ouvragesillustrés pictorialworks plantecology plants pollen pollinationbyanimals pollinationbyinsects pollinators pollinisation sexin silene spanishlanguagematerials