30 April 1987.
District of Columbia, United States
Comment: The 1986 U.S. National Arboretum Flowering Cherry (Prunus) Expedition to Taiwan, Korea and Japan. Daily mean minimum winter temperature for 10 years and for the coldest year depicted as DMMT(10) and DMMT(1).
Donor(s):
31 March 1988.
District of Columbia, United States
Comment: Donated to NCGR, Davis.
Donor(s):