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Publication Information

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Title: Maturation of Sweetgum and American Sycamore Seeds

Author: Bonner, F. T.;

Date: 1972

Source: Forest Science 18(3): 223-231

Publication Series: Scientific Journal (JRNL)

Description: Over three consecutive years in central Mississippi, sweetgum (Liquidambar styraciflua L.) and sycamore (Platanus occidentalis L.) fruits had nearly reached full-size by late June. Sweetgum seeds were physiologically mature by mid-August, but dry weight increased until late September. As sweetgum seeds matured, the crude fat level rose to 27 percent of seed dry weight. During maturation, concentrations of soluble nitrogen, soluble carbohydrates, and magnesium decreased, while those of protein nitrogen and phosphorus increased. Sycamore seeds became physiologically mature by early September. Chemical changes in sycamore were similar to those in sweetgum, except that the major food reserves were carbohydrates and not fats.

Keywords: Liquidambar styraciflua, Platanus occidentalis, chemical analysis

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.



Bonner, F. T. 1972. Maturation of Sweetgum and American Sycamore Seeds. Forest Science 18(3):223-231.


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