Most members of the family have a large floral chamber defined by a diaphragm. The diaphragm encloses the reproductive organs where pollination by carrion flies occurs
otherwise similar floral chambers in two Rafflesiaceae subclades, Rafflesia and Sapria, are constructed very differently. In Rafflesia, the diaphragm is derived from the petal whorl. In contrast, in Sapria it is derived from elaboration of a unique ring structure located between the perianth and the stamen whorl, which, although developed to varyin...
family possess a large, bowl-shaped floral chamber [sometimes referred to as a chamber blossom
The floor and walls of this chamber are formed by a perianth tube and the roof is defined by an organ called the diaphragm
opening of the diaphragm serves as the entrance for carrion fly pollinators (13, 14). The chamber is in turn surrounded by a series of attractive sterile organs, termed perianth lobes
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