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(American Journal of Botany. 2003;90:957-959.)
© 2003 Botanical Society of America, Inc.

Brief Communications

First fossil record of transfer cells in angiosperms1

Marc Gottschling2 and Hartmut H. Hilger3,4

2Freie Universität Berlin, Fachbereich Geowissenschaften, Fachrichtung Paläontologie Malteser Str. 74-100, Haus D, D-122 49 Berlin, Germany; 3Freie Universität Berlin, Institut für Biologie—Systematische Botanik und Pflanzengeographie Altensteinstraße 6, D-141 95 Berlin, Germany

Transfer cells are specialized plant cells that optimize short-distance transport by an extension of the interior surface of the cell walls. Using scanning electron microscopy (SEM), we found transfer cells in the fossil seed coat of Ehretia clausentia (Ehretiaceae, Boraginales) from the London Clay flora (Lower Eocene). This is the first fossil record of transfer cells in angiosperms.

Key Words: Boraginales • Ehretia • Europe • London Clay flora • Scanning electron microscopy (SEM) • Tertiary • transfer cells • ultrastructure






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