1. Herbaria and Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Avenue, Cambridge, MA 02138
2. Department of Geobotany and Botanical Garden, Institute of Biology, Herbarium, Martin Luther University, Neuwerk 21, Halle (Saale) 06099, Germany
3. Institute for Plant Protection in Horticulture and Urban Green, Federal Research Centre for Cultivated Plants, Julius Kühn-Institute, Messeweg 11/12, Braunschweig 38104, Germany