XVI International Botanical Congess

Two species of permineralized monocot flowers from the Upper Cretaceous of Japan are reported. One of them is Cretovarium japonicum Stopes et Fujii (1910). Many specimens of C. japonicum were found and details of its anatomical features were reconstructed. Cretovarium japonicum is characterized by hypogynous flower with trilocular capsules, seeds without phtomelan, persistent tepals fused to form a corolla tube vascularized with up to ten vascular bundles arranged in a single ring, and pericarp differentiated into fibrous endocarp and mesocarp and parenchymatous exocarp. Another flower has also trilocular capsules with surrounding corolla tube. It is different from C. japonicum in that pericarp shows loculicidal dehiscence and that it consists of uniform parenchymatous cells. Some features of these floweres resemble some taxa of th