The monograph is devoted to the Hawaiian wild polyploid cotton species G. tomentosum Nutt. Former It seems . and G. hirsutum L. species were isolated as a result of individual selection from interspecific hybrids and cultivated species of G. hirsutum L. and hybrids obtained on the basis of hybridization with the analyzer sequence. number, nature of heredity of leaf thickness. The plate and the study of its formation over generations are described on the basis of collected scientific materials.