by Kristen Minogue
The secret is in the soil. In one of the oddest couples in the natural world, orchids need fungi to grow. But finding those fungi can be tricky, until a new study from the Smithsonian Environmental Research Center (SERC) used DNA to find them in more places than anyone suspected.
There are 14 federally endangered or threatened orchids in the U.S. alone, and dozens more are endangered or threatened at the state level. Figuring out how to restore any single species is difficult, because there are so many different kinds.
“You’re talking about the largest plant family in the world,” said Melissa McCormick, lead author and SERC molecular ecologist. Orchids grow from islands off Antarctica to the Arctic Circle and just about everywhere in between. “They grow in darn near every environment on Earth.” But for all their diversity, the planet’s 26,000-plus known orchid species have one thing in common: None can germinate in the wild without a suitable fungus. Click to continue »