Jordon-Thaden IE, Al-Shehbaz IA, Koch MA* Species richness of a globally distributed, arctic-alpine polyploid genus, Draba L. (Brassicaceae). Alpine Botany.

*correspondence: University of Heidelberg, Center for Organismal Studies (COS), Department of Biodiversity and Plant Systematics, Im Neuenheimer Feld 345, 69120 Heidelberg, Germany.

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Electronic Supplementary Material 1: Floras and checklists using in compilation of species richness of Draba on a global scale.

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Al-Shehbaz IA. 2009. Two new North American species of Draba (Brassicaceae): D. heilii from New Mexico and D. mulliganii from Alaska. Harvard Papers in Botany, 14(1): 83-86.

Al-Shehbaz IA. 2007. Two new species of Draba and Eutrema (Brassicaceae) from Sichuan, China. Harvard Papers in Botany, 11(2): 277-279.

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Pottier-Alapetite G. 1979. Flore de la Tunisie, Angiosperms-Dicotyledones, Apetales-Diaypetales, 230-231; Ouvrage publie par le Ministrere de l'Enseignement Superieur et de la Recherche Scientifique et le Ministrere de l'Agriculture.

Quezel P, Santa S. 1962. Nouvelle Flore De'Algerie et das Regions Desertiques Meridionales Tome I.: 411; Centre National de la Recherche Scientifique, Paris.

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Sekretareva NA. 1999. The Vascular Plants of the Russian Arctic and Adjacent Territories, 44-45, Russian Academy of Sciences, Pensoft, Sofia/Moscow.

Schulz OE. 1927. CruciferaeDraba et Erophila. In: A. Engler, editor, Pflanzenreich IV. 105(Heft 89): 1-396. Verlag von Wilhelm Engelmann, Leipzig.

Tattou MI. 1999. Draba. In: M Fennae, MI Tattou, J Mathez, A Ouyahya, J El Oualidi, eds., Flore Pratique du Maroc, Manuel de determination des plantes vasculaires, Pteridophyta, Gymnospermae, Angiospermae (Lauraceae-Neuradaceae), Vol. 1: 414-418; Institut Scientifque, Universite Mohammed V. Agdal, Rabat.

Tolmachev AI. 1939. Draba. In: VL Komarov, ed., Flora of USSR. 8: 371-454, 649-650. Akademii Nauk SSR, Moscow & Leningrad.