THE LEAVES ARE OFTEN STRIKINGLY MARBLED OR VEINED WITH CONTRASTING SHADES OF GREEN. THE FLOWERS HAVE A PURPLE EYE-MARK AT THE BASE. ANTS HARVEST AND DISTRIBUTE THE SUGARY-COATED SEEDS. THE LEAVES DIE BACK IN SPRING, TO THE PLUMP, CONCAVE, LONG-LIVED TUBER, WHICH CAN GROW TO MORE THAN 25 CM ACROSS.
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