Fig. 5From: A new macrofossil ephedroid plant with unusual bract morphology from the Lower Cretaceous Jiufotang Formation of northeastern ChinaIllustrations of representative types of ovulate cones of ephedroid plants. A, Siphonospermum, reproductive shoot with pedicelled chlamydosperms; B, Prognetella, reproductive shoot with axillary and sessile chlamydosperms subtended by elongate leaf-like bracts; C, loosely arranged ovulate spike of Chengia and Liaoningia with shortened internodes and modified bracts; D, ovulate cone of Ephedra with a few pairs of proximal modified sterile bracts and a distal pair of modified fertile bracts, each modified fertile bract subtending an axillary and sessile chlamydosperm; E, ovulate cone of Gurvanella and Beipiaoa with one apical pair of modified fertile bracts, each subtending an axillary and sessile chlamydosperm; F, Jiangchangia, ovulate cone with two whorls of leaf-like bracts enclosing two sessile chlamydospermsBack to article page