African violet leaf surface (Saintpaulia ionantha), coloured scanning electron micrograph (SEM). The upper leaf surface contains numerous glandular and non-glandular trichomes (hairs). Shown here are numerous short (and one long) multicellular, non-glandular trichomes. Small glandular trichomes (round) are seen apposed closely to the leaf surface. These trichomes serve as a protective function against pests and also helps to reduce leaf evaporation. Magnification: x22 when shortest axis printed at 25 millimetres. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / DENNIS KUNKEL MICROSCOPY |
Bildgröße: | 2726 px × 3206 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |