Adaptability of selected tree species planted in Hawaii forests

Many tree species have been introduced into Hawaii from around the world (Bryan and Walker i962, Hillebrand 1965, St. John 1973). Trial introductions of new species for various forestry purposes began in the 19th century and are still continuing. Walker (1887), Judd (1915); Lyon (1929), Zschokke (1930), Bryan (1947), and Whitesell (1971, 1974), among others, have reported on some of the tree adaptability trials of government agencies and private organizations. But generally, adequate followup appraisals of the adaptability of species to the planting sites have not been performed, or at least have not been documented. Nelson (1965) compiled available information about plantings made by the Hawaii Division of Forestry between 1908 and 1960. This new research developed listings of the species planted, the locations of plantings, and the number of seedlings and dates of plantings. The purpose was to provide a general tabular reference on forest tree species introduced to Hawaii, and to guide field appraisals of selected tree species already introduced on forest sites. The present report summarizes appraisals of the adaptability of selected species. The appraisals are based on field observations and measurements, and seek to evaluate adaptability, growth, and form. Information on 31 species is presented in tabular form (p. 13), and the Species Notes provide additional comment on each species' characteristics, including its value as sawtimber and its flowering and fruiting habit. Recommendations for further research are also given