OLMSTEAD, RICHARD G*, CLAUDE W DEPAMPHILIS, ANDREA D WOLFE, NED D YOUNG, AND PATRICK A REEVES. Department of Botany, University of Washington, Seattle, WA 98195, Department of Biology, Vanderbilt University, Nashville, TN 37235, Department of Plant Biology, Ohio State University, Columbus, OH 43210, Department of Biology, Vanderbilt University, Nashville, TN 37235, Department of Botany, University of Washington, Seattle, WA 98195. - Disintegration of the Scrophulariaceae: from the ashes ..
Molecular phylogenetic investigations of the Scrophulariaceae indicate
that it is a polyphyletic group in its traditional circumscription.
Our best effort to determine relationships of representatives of the
family in a broader context of the Lamiales s.l. is based on sequences
for three chloroplast genes (rbcL, ndhF, rps2).
The results break the family into several groups. The resulting
shards vary in size and have varying degrees of support for their
distinctiveness based on the molecular data. Three large clades are
evident and provisionally are designated Orobanchaceae,
Plantaginaceae, and Scrophulariaceae (according to current ICBN
rules). Some smaller groups or individual genera do not fall into any
of those three clades, or are only weakly supported as part of clades
containing those groups. These include Calceolarieae, Gratioleae pro
parte, Hemimerideae, Angelonia, Mimulus, and
Paulownia. Some other genera group with other families and
probably belong with them, whereas some small families, traditionally
maintained as distinct, probably deserve to be included in one or the
other of the three main clades.
Key words: cpDNA, Lamiales, molecular systematics, Orobanchaceae, Scrophulariaceae