Fig. 2.

Phylogenetic position and gene families of G. menghaiensis. a, Inferred phylogenetic tree with 254 single-copy genes of 14 plant species. Gene family expansions are indicated in green, and gene family contractions are indicated in red. Expansions of Gene families are indicated in green, contractions of gene families are indicated in purple. Estimated divergence times (in millions of years) are indicated by light blue boxes, the red star represents the divergence time between Gastrodia. MRCA, most recent common ancestor