A Compound Ovary with Open Carpels in Winteraceae (Magnoliales): Evolutionary Implications

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Science  27 May 1977:
Vol. 196, Issue 4293, pp. 977-978
DOI: 10.1126/science.196.4293.977-a


"Bubbia" perrieri, a primitive angiosperm collected once in 1909 in northwestern Madagascar, differs from all other members of its genus and family (Winteraceae) in its bicarpellate, unilocular ovary. Moreover, its inflorescences are terminal, and its development is partially sympodial. It therefore represents the survivor of a previously undetected evolutionary line that should be accorded at least subfamilial status. If so, Winteraceae might, more likely than previously, be considered as allied to Canellaceae, a group of primitive angiosperms that has an ovary of "Bubbia" perrieri type and is specialized in some other respects.