Of the 20,000 varieties of dahlia flowers, only 10 to 20 kinds are black in color. Now researchers say they've solved the molecular mystery of how these rare flowers get their dark hues. Flower color ...

Understanding the Context

The Forward: From ‘The Black Dahlia’ To ‘Tulip Fever,’ Are Flower-Based Films Doomed To Fail? From ‘The Black Dahlia’ To ‘Tulip Fever,’ Are Flower-Based Films Doomed To Fail? Phys.org: Le Rouge et le Noir: Where the black dahlia gets its color The molecular mechanisms whereby a spectrum of dahlias, from white to yellow to red to purple, get their colour are already well known, but the black dahlia has hitherto remained a mystery. Now, a ...

Key Insights

Le Rouge et le Noir: Where the black dahlia gets its color Dahlias are generally thought of as fall flowering plants in our area. When planted directly into the ground, they generally don’t hit their blooming stride until late summer. Dalia gardeners who want ... In 1637, a craze for hybrid tulips brought the Dutch economy to its knees. The flowers were overvalued, creating the first speculative bubble on record.

Final Thoughts

The phenomenon, called “Tulip Mania,” ended in ...