Deutsch: Hypogymnia physodes - Blasenflechte in Hessen, Deutschland. Die Flechten-Spezies wurde freundlicher Weise zugeordnet von Prof. Volkmar Wirth. (Vgl. "Farbatlas Flechten und Moose" von Volkmar Wirth und Ruprecht Düll, Eugen Ullmer GmbH, 2000, ISBN3-8001-3517-5.)
English: Hypogymnia physodes, Hesse, Germany. Lichens are interesting life forms: fungi hold algae captive in a way, that their relationship is in-between a symbiosis and purely parasitic, also described as controlled parasitism.
The lichen species was kindly assigned by Prof. Volkmar Wirth. (Cf. "Farbatlas Flechten und Moose" by Volkmar Wirth and Ruprecht Düll, Eugen Ullmer GmbH, 2000, ISBN3-8001-3517-5.)
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