Abstract
The different colour diaspore types of Arctotis fastuosa Jacq. and Ursinia cakilefolia DC. were examined. Pericarp and seed coat anatomy revealed only minor differences between fruit morphs. Diaspores of A . fastuosa are characterized, amongst others, by a lens-shaped pericarp operculum and bubble-shaped, air-filled cells in the outer epidermis of the seed coat. The latter may represent a mechanism to protect the embryo against excessive heat.
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