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

My colleague and I have published a new study of cactus flowers which may help explain the conundrum. For more than a century ...

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

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

Rafflesia, the flower species which contains some of the world’s largest flowers, is at risk of extinction, scientists have warned in a new study. The study, co-authored by botanists from the ...

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 ...