The study of plant phylogeny using amino acid sequences of Ribulose-1,5-Bisphosphate Carboxylase. III. Addition of Malvaceae and Ranunculaceae to the phylogenetic tree

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Abstract
The N-terminal sequences (40 amino acids) are given for the small subunit (SSU) of ribulose bisphosphate carboxylase from three species of Ranunculaceae and three species of Malvaceae. Methods are given for integrating these into a previously published phylogenetic tree for eight families. The two new familial nodes that have been derived group closely with each other and with equivalent nodes of Asteraceae and Caprifoliaceae. There appears to be considerably more variation in Ranunculaceae than in Malvaceae and possible reasons for this are discussed.