Table 1.

Plant material used in morphological and molecular analyses

Source	Province/Locality	Population code	Latitude	Longitude	Altitude (m)	Putative taxon	Number of plants	Molecular analysis	Morphological analysis	Flower phenotype
Author's Collection (2008)	La Rioja/Guanchín	GV02	29°10′21″S	67°39′02″W	1774	S. × rechei	3	Yes	Yes	N
		GV04	29°09′47″S	67°39′29″W	1818	S. × rechei	3	Yes	Yes	N
		GV05	29°09′46″S	67°39′32″W	1823	S. × rechei	2	Yes	Yes	N
		NN	29°09′46″S	67°39′30″W	1824	S. × rechei	4	Yes	Yes	SA
		GV07	29°09′44″S	67°39′31″W	1831	S. microdontum	6	Yes	Yes	N
		GV08	29°09′44″S	67°39′32″W	1829	S. × rechei	5	Yes	Yes	A
		GV09	29°09′42″S	67°39′38″W	1826	S. × rechei	6	Yes	Yes	A
		GV11	29°09′39″S	67°39′40″W	1841	S. × rechei	1	Yes	Yes	A
		GV12	29°09′42″S	67°39′25″W	1838	S. × rechei	3	Yes	Yes	N
	La Rioja/Cuesta de Miranda	LR1	29°25′59″S	67°49′57″W	1556	S. kurtzianum	1	Yes	No	N
		LR2	29°26′00″S	67°49′56″W	1557	S. kurtzianum	3	Yes	No	N
		LR3	29°25′59″S	67°49′55″W	1557	S. kurtzianum	3	Yes	No	N
	La Rioja/Cuesta de Guanchín	CG	29°11′00″S	67°35′59″W	1555	S. kurtzianum	3	Yes	No	N
Author's Collection (2010)	La Rioja/Guanchín	CMM	29°09′35″S	67°39′44″W	1845	S. microdontum	4	Yes	No	N
		CMK	29°09′36″S	67°39′42″W	1850	S. kurtzianum	6	Yes	No	N
		CMR	29°09′34″S	67°39′50″W	1846	S. × rechei	3	Yes	No	SA
Potato and Forages Germplasm Bank, INTA Balcarce	Mendoza/Las Heras	4544	32°33′S	68°58′W	680	S. kurtzianum	2	Yes	Yes	N
		4548	32°26′S	68°56′W	1600	S. kurtzianum	3	Yes	Yes	N
		4505	32°24′S	68°52′W	1185	S. kurtzianum	3	Yes	Yes	N
		4549	32°25′S	68°57′W	1660	S. kurtzianum	3	Yes	Yes	N
		4552	32°32′S	69°02′W	2330	S. kurtzianum	3	Yes	Yes	N
	Catamarca/Andalgalá	4631	27°19′S	66°39′W	2030	S. microdontum	5	Yes	Yes	N
	Salta/Santa Victoria	5902	22°08′S	65°02′W	2900	S. microdontum	3	Yes	Yes	N
	La Rioja/Chilecito	4572	29°13′S	67°39′W	1820	S. × rechei	1	No	Yes	A
		4574	29°12′S	67°39′W	1880	S. × rechei	2	Yes	Yes	A
		4583	29°08′S	67°37′W	1520	S. × rechei	1	Yes	Yes	A
Total		26					82

N = Normal; SA = Slightly Abnormal; A = Abnormal.