according to previous studies, the genus rheum in iran includes four species: r. turkestanicum janisch., r. persicum losinsk., r. ribes l. and r. khorasanicum baradaran & jafari. during the long-term study, based on field and many herbaria specimens, three new species including r. iranshahrii taheri & assadi sp. nov., r. kordestanicum taheri & assadi sp. nov. and r. austro-iranicum taheri & ass...

Gooseberries are often distinguished from currants as a distinct genus (Grossularia) or subgenus (Ribes subg. Grossularia), but recent molecular phylogenetic analyses of chloroplast and nuclear data disagree as to the monophyly of this group. We report new sequence data from the 18–26S nuclear rDNA ITS and ETS regions and from the chloroplast psbAtrnH intergenic spacer that, in combination with...