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Term Definition
Corona A structure located between the petals and the stamens of some flowers and derived from either of these organs; e.g., in Passiflora (Passifloraceae), some Apocynaceae subfamily Asclepiadoideae, and some Melastomataceae. A flower of Asclepias. Drawing by B. Angell.
Gynostegial corona A corona derived from the gynostegium. A flower of Asclepias. Drawing by B. Angell.