Repeatedly Northwards and Upwards: Southern African Grasslands Fuel the Colonization of the African Sky Islands in Helichrysum (Compositae)Authors: Carme Blanco-Gavaldà, Mercè Galbany-Casals, Alfonso Susanna, Santiago Andrés-Sánchez, Randall J. Bayer, Christian Brochmann, Glynis V. Cron, Nicola G. Bergh, Núria Garcia-Jacas, Abel Gizaw, et al.
