Fig. 4 in The diversification of thecae horns and their putative significance-a case study of Schismatoglottideae (Araceae)

Fig. 4 Microstructures of the stamens. A1–A6, Toga perplexa. A1, Stamen at pistillate anthesis (200 μm), A2, Octahedron and 3D-star like oxalate crystals extruded from the tip of thecae horn during pistillate anthesis (10 μm), A3, Stamen during staminate anthesis (200 μm), A4–A5, Octahedron and 3D-star like oxalate crystals extruded from the tip of thecae horn during staminate anthesis (10 μm), A6, Oxalate crystals (octahedron) extruded from the stomata (10 μm); B1–B6, Pursegloveia minimum. B1, Stamen at pistillate anthesis (200 μm), B2, Oxalate crystals (octahedron) scattered on the stamen surface (50 μm), B3, Stamen at pistillate anthesis, with the pollen accumulated in the connective (200 μm), B4, Stomata distributed on the raised margin of stamen (50 μm), B5–B6, Pollen, together with oxalate crystals (octahedron), was extruded from the tip of thecae horn (10 μm); C1–C6, Pursegloveia orientalis. C1, Stamen at pistillate anthesis (500 μm), C2, Oxalate crystals (octahedron and 3D star like) were distributed on the stamen surface (50 μm), C3, Octahedron crystals extruded from the stomata on stamen surface (10 μm), C4, Stamen at staminate anthesis (500 μm), C5, Pollen in