Pollination function transferred: modified tepals of Albuca (Hyacinthaceae) serve as secondary stigmas.

Abstract excerpt

BACKGROUND AND AIMS: The stigma, a structure which serves as a site for pollen receipt and germination, has been assumed to have evolved once, as a modification of carpels, in early angiosperms. Here it is shown that a functional stigma has evolved secondarily from modified tepals in some Albuca species (Hyacinthaceae). METHODS: Deposition of pollen on Albuca floral organs by bees was recorded. Pollen germination...

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