A biosystematic study of Pelargonium section Ligularia: 1. A new section Subsucculentia

Abstract

The presumed relationship between P. grandicalcaratum Knuth, P. karooicum Compton & Barnes, P. otaviense Knuth and P. spinosum Willd., based on karyological characteristics, is confirmed by macromorphological, palynological, rbcL gene sequence studies and an analysis of phenolic compounds. These four species form the new section Subsucculentia J.J.A. v.d. Walt. Taxonomic treatments of the section and species are presented. Die veronderstelde verwantskap tussen P. grandicalcaratum Knuth, P. karooicum Compton & Barnes, P. otaviense Knuth and P. spinosum Willd., gebaseer op kariologiese kenmerke, is bevestig deur makromorfologiese-, palinologiese-, rbcL geenvolgorde-studies en 'n analise van fenoliese verbindings. Hierdie vier spesies vorm die nuwe seksie Subsucculentia J.J.A, v.d. Walt. Taksonomiese uiteensettings van die seksie en spesies word aangebied.