From mnn.com

This tiny unnamed Ecuadorean orchid measures barely 2 millimeters across and its petals are only one cell thick. It is the world's smallest orchid by a considerable margin. It was accidentally discovered after Lou Jost, a botanist, found the orchid growing on a larger plant that he had brought into his greenhouse. Ironically, the same roads that have allowed botanists like Jost to explore previously unseen areas and discover new species now threaten their habitats.

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