What type of wood was the cross that Christ was crucified on?

The Bible does not tell us what type of wood the cross Jesus was crucified on was made of. Roman history does not go into specifics as to how the crosses were made or what type of wood they were made of. As a result, we cannot know for sure what type of tree was used to make the cross. There is a legend that it was made of dogwood. This is unlikely considering the typical size of a dogwood tree. The legend of the dogwood tree, author unknown, is as follows:

http://www.gotquestions.org/legend-dogwood.html

A Christian legend has it that the mistletoe was damned by God to a parasite’s life, because Christ’s cross was made out of its wood.

http://www.innovations-report.com/html/reports/life_sciences/report-53002.html