Tree Shapes

Resources and Bibliography

"Glossary.", and linked articles.  Scarborough High School.  2005.
< http://www.scarborough.k12.me.us/high/projects/trees/glossary.htm>.  (21 Jun. 2005).

"Biology of Horticulture:  Structure.", and linked articles.  Ohio State University.  2002.
< http://www.hcs.ohio-state.edu/hort/bio.html#structure>.  (28 Mar. 2006).