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Term Definition
Nectar chamber A chamber at the apex of the coils of zygomorphic-flowered species or at the base of the staminal tube of most Old World species and in some actinomorphic-flowered genera in the New World, e.g., for example of species of . The nectar that accumulates in the nectar chambers serves as the reward that attracts pollinators to the flowers. The androecium of a zygomorphic-flowered Lecythidaceae. Photo by C. A. Gracie.