The relationships between the genera Triaenophora, Oreosolen and Rehmannia were investigated. All three genera were previously included in tribe Veroniceae which was part of Scrophulariaceae but which is now included in Plantaginaceae. With regard to the content of iridoid glucosides, Triaenophora rupestris and the much-investigated Rehmannia were almost identical in containing catalpol, ajugol...

T2-type RNases are responsible for self-pollen recognition and rejection in three distantly related families of flowering plants-the Solanaceae, Scrophulariaceae, and Rosaceae. We used phylogenetic analyses of 67 T2-type RNases together with information on intron number and position to determine whether the use of RNases for self-incompatibility in these families is homologous or convergent. Al...

In China, Scrophularia ningpoensis Hemsl (Scrophulariaceae) has been cultivated for many years; however, the effects of drought on the content of secondary metabolites in Radix Scrophulariaceae are still unknown. The study investigated the medicinal components of S. ningpoensis including harpagoside, aucubin, catalpol, harpagide, and cinnamic acid in relation to drought stress. Three ecotypes o...

Summary A new species of Rhabdotosperma (Scrophulariaceae) is described from southwestern Saudi Arabia. For 75 years, the was confused with R. bottae and Verbascum melhanense . The illustrated information on identification, distribution, specimens examined, habitat, conservation status, phenology, etymology, taxonomic notes.

3Department of Botany, Box 355325, University of Washington, Seattle, Washington 98195 USA; 4Department of Biology, Life Sciences Consortium, and Institute of Molecular Evolutionary Genetics, Pennsylvania State University, 208 Mueller Lab, University Park, Pennsylvania 16802 USA; 5Department of Evolution, Ecology, and Organismal Biology, Ohio State University, 1735 Neil Avenue, Columbus, Ohio 4...