Evidence bearing on the origin of infraspecific disjunction inSophora gypsophila (Fabaceae)

Morphometrical, cytological, chemical and ecological data are presented concerning the origin of infraspecific disjunction inSophora gypsophila, its 2 varieties, var.gypsophila and var.guadalupensis, being known from only 2 very local sites which are separated by approximately 300 km. It is concluded that the populations are remnants of a much more widespread, highly variable sib of Wisconsin time.