Figure 1 from: Hori K, Murakami N (2019) Origin of the Diplazium hachijoense complex (Athyriaceae). PhytoKeys 124: 57-76. https://doi.org/10.3897/phytokeys.124.35242

Figure 1 Hybridization patterns with germination from which apogamous species are derived. (1) Tetraploid hybrid between a triploid apogamous species and a diploid sexual species, (2) triploid hybrid between a diploid apogamous species and a diploid sexual species, (3) triploid hybrid between a triploid apogamous species and a diploid sexual species, (4) tetraploid hybrid between a triploid apogamous species and a tetraploid sexual species. Circle, sporophyte of sexual species; heart, gametophyte; square, sporophyte of apogamous species.