Reports that might represent recent escapes from cultivation were not mapped, although these were included in Appendix I. Documented FLCP populations are recorded for 125 counties in 12 states. Thus, a more dense pattern of county records would be expected from a fully accurate FLCP distribution map. This would, however, probably correspond to patterns of drainage in that the entire range of distribution is associated with river systems that lead from the central U.S. to the Gulf of Mexico. The southeastern limit of distribution depicted in Fig. 5 is problematic. C. pepo var.
Northern limits are also uncertain.
A fully accurate map might include more county records from Indiana and southeastern Kansas, and possibly some records for Ohio. As indicated above, the genetic structure of FLCP within this range of distribution is complex and ill-defined at this point in time. Domesticated C. pepo , both ssp. With the exception of the trans-pecos and Edwards Plateau areas of western Texas, it is reasonable to assume that home gardens are common throughout the range and also that many of these support cultivated populations of C.pepo domesticates. The national census of agricultural production, produced by the U.S. Census Bureau, tracks national commercial production of 'squash' and 'pumpkins'.