Figure 3. The morphology of pollen and style in Mikania micrantha under SEM. A, Pollen (bar=5 μm); B, A style gives off two style
branches (sb) (bar=200 μm); C, Detail of a style branch showing the sterile appendage covered by sweeping hairs (D, E) and the stigmatic
surface (F) (bar=100 μm); Arrows with figure numbers indicate the approximate position of anatomical sections illustrated in
corresponding figures; D, Sweeping hairs at the tip part of the style branch (bar=20 μm); E, Sweeping hairs located on the upper part of
the style branch (bar=20 μm); F, Receptive stigmatic surface consisting of columnar papilla cells (bar=10 μm).