Resources for Botanizing in the Washington, D.C., Region
Plants in general (Kingdom Plantae)
Tree Fact Sheets
Peterson, John.
2004.
Tree Fact Sheets.
Internet file.
http://www.cnr.vt.edu/dendro/dendrology/main.htm
(14 January 2004)
(680 PDF sheets on tree species)
Acer saccharinum
,
Silver Maple, 14 March 2001,
Bethesda, Maryland