Behind the stillness of desert landscapes, cacti appear to be changing in unexpected ways. The cactus on your windowsill may ...

Faced with extreme drought, these wildflowers adapted. Scientists call it "evolutionary rescue" and say it's a hopeful sign ...

Scientists discover that fast-changing cactus flowers, not size or pollinators, are behind the rapid evolution of new cactus species.

Plants are usually seen as stationary life forms, quietly supporting environments. But plant communities and populations are ...

A member of the aster and sunflower family found in Isle Royale National Park is one of the world's newest-described flower species. Small with delicate yellow blades, Packera insulae-regalis -- Latin ...