Cross sections of the gynoecium in Magnolia denudata flower. cb: cortical bundle, db: dorsal bundle, ep: epidermis, l:ovarian locule, lb: lateral bundle, ob: ovular bundle, ov: ovule, sb: stelar bundle, vb: ventral bundle. Adaxial side is to the bottom. Specimen number NWU00032054-4403, deposited at Northwest University, China. a. Cross section of a flower, showing several carpels around the floral axis. Bar = 1 mm. b. Detailed view of the rectangle in Figure. 2a, showing cortical bundles giving rise to two ovular bundles as well as a lateral bundle. Bar = 0.2 mm. c. Detailed view of the rectangle in Figure 1b, showing two ovular bundles and a lateral bundle. Bar = 0.2 mm. d. Two ovules in the same ovary arising from the same ovular bundle (arrow). Bar = 0.2 mm. e. Floral axis with stelar bundles, cortical bundles, and their relationship with carpel boundaries and ovular bundles. Bar = 0.2 mm. f. Collateral stelar bundle with adaxial xylem (arrow). Bar = 50 μm. g. Amphicribral cortical bundle with close-to-center xylem (arrow). Bar = 50 μm.h. Collateral dorsal bundle with adaxial xylem (arrow). Bar = 50 μm. i. Three collateral stelar bundles with adaxial xylem (white arrows) and abaxial phloem (yellow arrows). Bar = 50 μm. j. Amphicribral ovular bundle with phloem (P) (yellow arrows) surrounding the xylem (X) in the center (circle). Bar = 50 μm. k. Amphicribral cortical bundle with phloem (yellow arrows) surrounding the xylem in the center (white). Bar = 0.1 mm.