''Tus Ojos, Siempre Tus Ojos, Serán Para Mis Poemas. El Cuerpo Dáselo Al Viento, Al Sol, Al Mar, A La Tierra --La Mirada Encierra El Alma Y El Alma Sin Ella Es Ciega Que La Mirada Profunda No Es, Como La Voz, Ligera.''
Lichens are composite organisms consisting of a fungus (the mycobiont) and a photosynthetic partner (the photobiont or phycobiont) growing together in a symbiotic relationship. The photobiont is usually either a green alga (commonly Trebouxia) or cyanobacterium (commonly Nostoc).The morphology, physiology and biochemistry of lichens are very different from those of the isolated fungus and alga in culture. Lichens occur in some of the most extreme environments on Earth