Here we tested two possible nonexclusive explanations for the maintenance of a hybrid swarm between Senecio jacobaea and Senecio aquaticus; first, that genotype-by-environment interactions involving water and nutrient clines are involved in hybrid fitness, and second, heterosis in early hybrid generations may provide an initial hybrid advantage that contributes to hybrid persistence. In three c...

To cite this article: Judith A. Irwin, Paul A. Ashton, Francois Bretagnolle & Richard J. Abbott (2016): The long and the short of it: long-styled florets are associated with higher outcrossing rate in Senecio vulgaris and result from delayed self-pollen germination, Plant Ecology & Diversity, DOI: 10.1080/17550874.2016.1181116 To link to this article: http://dx.doi.org/10.1080/17550874.2016.118...

The new alkaloids 7-,9-diangeloylplatynecine (1) and 8-episarracine N-oxide (2), were isolated and identified from the roots of Senecio macedonicus. Another one, 8-epineosarracine was detected by GC/MS analyses of the crude alkaloid mixture. The cytotoxicity and biological activity of the alkaloids were tested on normal murine spleen lymphocytes and P3U1 mouse myeloma.

UNLABELLED PREMISE OF THE STUDY Development of microsatellite markers for the vulnerable forb Senecio macrocarpus was performed to begin an assessment of its population structure and breeding method to aid in the conservation of the species in Victoria, Australia. • METHODS AND RESULTS Fifteen microsatellite markers were developed for S. macrocarpus from 454 pyrosequencing. The markers wer...

The newly described Senecio ×riloensis combines the morphological features of S. hercynicus and transylvanicus, grows in subalpine habitats Rila Mountains, Bulgaria. It is illustrated with photos living plants locus classicus.

Previous research has demonstrated that Senecio repangae subsp. and pokohinuensis have independent evolutionary origins. Here, we therefore elevate to species rank: pokohinuensis. Updated morphological descriptions for both are also provided.