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Lunularia cruciata thallus branching patterns. Black lines indicate branches, black dots represent nodes and tips (meristems). (A) Hypothetical representation of a completely symmetric thallus. (B) Asymmetric thallus branching in presence of contaminant. Short black arrows taken together indicate the maximum sequence of nodes. Red arrows and red dots indicate the absence of dichotomy (simple branching). (C) Growth and branching of thallus in 0 µM and 250 µM treatment.
