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Unrooted phylogram of the best maximum likelihood tree of terpene synthase sequences. Colored circles indicate the taxonomic identity of particular sequences (see inset legend). Text describes the number of transcripts that are phase specific or up-regulated in the ferns Polypodium amorphum (red) and Lygodium japonicum (yellow). Node support values are provided at Figshare (doi: 10.6084/m9.figshare.c.4229141).
