Research Article

The Evolutionary Dynamics of Apomixis in Ferns: A Case Study from Polystichoid Ferns

Figure 1

Global phylogeny of fern families as recovered in recent phylogenetic analyses [53, 61] with some poorly resolved nodes collapsed. Circles indicate occurrence of apomixis in this family. Grey circle: <5% of known apomictic fern taxa belong to this family; black circles: >5% of known apomictic fern taxa belong to this family. Pteridaceae are replaced by five subfamilies to illustrate the uneven distribution of apomixis in the highly diverse family. Fern families with more than 400 extant species are printed in bold. Stars indicate lineages of importance: 1 = Polypodiales, 2 = Pteridaceae, 3 = Eupolypods 1, and 4 = Eupolypods 2.
510478.fig.001