Arabesques, or floral and vegetal motifs, derive from a long tradition of similar motifs in Syrian, Hellenistic, and Roman architectural ornamentation. Early arabesque motifs in Umayyad Cordoba, such as those seen at the Great Mosque or Madinat al-Zahra, continued to make use of acanthus leaves and grapevine motifs from this Hellenistic tradition. Almoravid and Almohad architecture made more use of a general striated leaf motif, often curling and splitting into unequal parts along an axis of symmetry. Palmettes and, to a lesser extent, seashell and pine cone images were also featured. In the late 16th century, Saadian architecture sometimes made use of a mandorla-type (or almond-shaped) motif which may have been of Ottoman influence.