The genus Koenigia L. emend. Hedberg (Polygonaceae)

A synopsis of the genus Rheum (Polygonaceae) in Iran with description of three new species

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...

To Emend or not to Emend : On Determining the Integrity of Some Ancient Chinese Texts

The genus Artemisia L

The diversity of ten populations representing Artemisia monosperma and A. judaica has been analyzed, based on assessment of morphological, karyological and molecular variations. The analysis of morphological variation and molecular polymorphism as revealed by RAPD, using the software NTSYSpc-2.01, confirmed the differentiation of A. monosperma and A. judaica as two distinct species and showed w...

Characterization of RUSI, a telomere-associated satellite DNA, in the genus Rumex (Polygonaceae).

A satellite-DNA family (RUSI) has been isolated and characterized in Rumexinduratus Boiss and Reuter (Polygonaceae), an Iberian endemic polygamous sorrel. The RUSI repeats are 170 bp in length and approximately 68% AT-rich containing different variants of degenerate telomere motifs--(TT)(n)AN(GG)(n) -, a typical feature of subtelomeric DNA repeats adjacent to telomeres, which have been referred...

Multiple ITS Copies Reveal Extensive Hybridization within Rheum (Polygonaceae), a Genus That Has Undergone Rapid Radiation

BACKGROUND During adaptive radiation events, characters can arise multiple times due to parallel evolution, but transfer of traits through hybridization provides an alternative explanation for the same character appearing in apparently non-sister lineages. The signature of hybridization can be detected in incongruence between phylogenies derived from different markers, or from the presence of t...