Modificado de: http://www.biosci.uga.edu/almanac/bio_104/notes/apr_10.html.

Modificado de: http://www.biosci.uga.edu/almanac/bio_104/notes/apr_10.html.

http://www.efn.uncor.edu/dep/biologia/intrbiol/maderas.htm

Inicio del crecimiento secundario en un corte transversal de un tallo joven de Tilia.

gopher://wiscinfo.wisc.edu:2070/I9/.image/.bot/.130/Woody_Stems/Tilia_Stem_-_

cross_sections/Primary_Growth/Whole_Cross_Section.

Crecimiento secundario –tallo- ST

http://www.injec-thor.com/biologia.html

www.forestalweb.com

http://www.injec-thor.com/biologia.html

www.injec-thor.com/images/CAPAS_TRONCO.jpg

calentamientoglobal-sil.blogspot.com

http://botweb.uwsp.edu/Anatomy/monocotleaves.htm

http://botweb.uwsp.edu/Anatomy/monocotleaves.htm