Lichen. Macrophotograph of the foliose (leaf-like) lichen Canomculina sp. Lichens are formed from the a symbiotic association between a fungus and an alga. The alga is contained within the hyphae (filaments) of the fungus. Lichens are slow-growing,and are usually found on stones and the bark of trees. They are sensitive to pollution,and are a good indicator of air quality. Photographed by the USGS Bee Inventory and Monitoring Lab: an organisation dedicated to identifying,cataloguing and monitoring bees and other insect species | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US Geological Survey |
Bildgröße: | 5258 px × 3339 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |