Fig. 5.

Glandulocalyx upatoiensis. Series of transverse microtome sections (left) and interpretative line drawings (right) of a relatively young floral bud, from apex (A) to base (I) of specimen PP55160 in Fig. 1D showing sepals (green), petals (red), stamens (yellow), gynoecium (blue) and floral base (grey); bud is laterally damaged with part of the calyx missing. (A) Distal part of bud with sepals, corolla and tips of styles. (B, C) Level of styles and anthers. (D) Level of distal part of ovary with three locules. (E) Level of stamen filaments and symplicate region of ovary. (F) Level of synascidiate region of ovary with protruding axile placentae. (G) Level of pendant parts of placentae. (H, I) Level of floral base. (J) Reconstruction of floral diagram showing five quincuncial sepals, five quincuncial petals, 24 extrorse stamens and the trilocular gynoecium. Scale bar (A–I) = 500 µm.