Definition
A flower is 'gamopetalous' when its petals are fused together, at least partially, forming a tube-like or bell-shaped structure. Imagine petals joined at the base, like a floral cone. This fusion creates a single, often vase-like, petal structure. 'Gamopetalous' contrasts with flowers having separate, distinct petals. Think of a trumpet vine flower as an example. The fused petals can affect how pollinators interact with the flower, making it a key evolutionary trait.