What do you call a cluster of flowers along an elongated stem?

The correct term for a cluster of flowers along an elongated stem is "inflorescence." This term encompasses various flower arrangements and indicates that multiple flowers are situated together on a single stem. While a raceme is a specific type of inflorescence characterized by flowers arranged along a central stem with the older flowers at the bottom and younger flowers at the top, it does not apply to all arrangements.

Understanding different types of inflorescences can enhance your comprehension of plant structure and reproductive biology. Other terms you might encounter, such as spike or cluster, refer to particular forms of flower arrangements or groupings, but they do not accurately define a general cluster of flowers along an elongated stem. Inflorescence is the broader and more precise term that captures this concept comprehensively.