Pollen mass of Orchis mascula when first attached (A) and after depression (B), 1899. From The Various Contrivances by which Orchids are Fertilized by Insects (second edition) by Charles Darwin. (London, 1899). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 4759 px × 3670 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |