“…HETEROZYGOSITY for reciprocal translocations has been reported in several groups of flowering plants, such as Gaura (Bhaduri, 1942;Raven and Gregory, 1972), Gayophytum (Lewis and Sweykowski, 1964), Hypericum (Hoar, 1931), Rhoeo spathecea (Sax, 1931(Sax, , 1935, Paeonia (Stebbins and Ellerton, 1939;Walters, 1942), Chrysanthemum (Rana and Jam, 1965), Clarlcia (Mooring, 1958;Wedberg, Lewis and Venkatesh, 1968), and Isotoma (James, 1965(James, , 1970. The classical example is, of course, that of Oenothera, reviewed by Cleland (1972).…”