Wild potato (Solanum sect. Petota) germplasm collecting expedition to Mexico in 1993, with special reference to Solanum bulbocastanum Dunal and S. cardiophyllum Lindley

A joint Mexico/United States expedition collected wild potato (Solanum sect. Petota) germplasm in Mexico between August 1-31, 1993. The purpose of the expedition was to expand germplasm and herbarium collections of S. bulbocastanum and S. cardiophyllum. Collections were made from west-central to southern Mexico, and comprised 19 true seed and 37 tuber collections (45 collections in total) of 9 species and two putative natural hybrids. © 1995 Kluwer Academic Publishers