A PHYLOGENETIC TREE FOR SOME MONOCOTYLEDONS AND GYMNOSPERMS DERIVED FROM PROTEIN SEQUENCES

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Abstract
Summary: First‐40 amino acid sequences of ribulose bisphosphate carboxylase small subunit are presented for six monocotyledons and two gymnosperms and are analysed together with previously published sequences of nine monocotyledons and two gymnosperms. In the resulting minimal phylogenetic tree, the gymnosperms are clearly separate from the monocotyledons with Ephedra closest to them. The families Poaceae, Commelinaceae, Arecaceae and Liliaceae (sensu lato) are separate although the last does not have a clearly defined origin. The two members of Alismatidae are closest to the origin of the monocotyledons. The majority of the tree agrees well with other taxonomies.