In order to serve succeeding researchers, official records of exploration to South America from 1995 to 2001 conducted by the Laboratory of Ornamental Plant Science were provided. The exclusive purpose of the exploration was to observe native habitats of a solanaceous genus Petunia sensu Jussieu. During the exploration for the seven seasons, 858 different herbarium specimens (210 specimens from Argentina, 595 from Brazil, 1 from Mexico, 37 from Paraguay and 15 from Uruguay) were collected, and the total distance covered was 69, 193km (27, 123km in Argentina, 31, 308km in Brazil, 2, 349km in Mexico, 4, 748km in Paraguay, 840km in Peru, and 2, 825km in Uruguay). The accumulation from 1988 to 2001 is as follows: 2, 073 specimens (239 from Argentina, 1, 489 from Brazil, 1 from Mexico, 38 from Paraguay, and 307 Uruguay) and 132, 777km (30, 603km in Argentina, in 68, 396km Brazil, 2, 349km in Mexico, 4, 748km in Paraguay, 840km in Peru, and 24, 355km in Uruguay).