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. 2017 Jan 6;7:39759. doi: 10.1038/srep39759

Figure 2. Representative scanning electron microscopic images of five types of flowering crabapple pollen exine ornamentation.

Figure 2

(a) Wholly Regular Single-pattern Type (WRS), images of Malus robusta (×2500); (b) Wholly Regular Multi-pattern Type (WRM), images of M. halliana ‘Pink Double’ (×2500); (c) Partially Regular Single-pattern Type (PRS), images of M. ‘Red Baron’ (×3000); (d) Partially Regular Multi-pattern Type (PRM), images of M. ‘Everest’ (×3000); (e) Irregular Type (IR), images of M. ‘Velvet Pillar’ (×3000).