So unharvestable and priceless, this night-blooming cactus flower wilts soon after blooming, making it one of the rarest flowers in the world. A man-made marvel that took eight years to cultivate, ...

After the bluebonnet, also known as the “buffalo clover,” was declared the state flower by the Texas Legislature in 1901, a ...

An exotic colour at the far end of our visible spectrum and often associated with royalty, purple is relatively rare in nature. But some vibrant plants, animals and fungi do show off a regal purple, ...