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Rock pimples, fog fingers, old man's beard— their common names are amusing, but lichens are among Earth's most amazing and oldest living things, and display incredibly beautiful colors and shapes. They grow on bark, rock, and barren soil, and thrive in rain forests, deserts, the arctic—even environments simulating Mars! Lichens are sensitive environmental indicators, yet scientists are only just beginning to understand them. Join noted NYBG lichenologist James Lendemer for a captivating session that includes a microscope lab.

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