1Bean’s Trees and Shrubs. Temerate Woody Plants in Cultivation: Quick search. International Dentrology Society. Web. 26 Sept. 2015. < http://www.beanstreesandshrubs.org/>.
In general, a decent source to use. It covers leaf arrangement, fall colour, and fruit/cone/flower description quite thoroughly. A downside would be that there are no images for any of the plants. However the list of plants is quite exhaustive and it also provides a list of all the other species in that genus with links. This is a nice feature. Once again, if you want to find all of the necessary ID information in one place, this is not where you should turn. However, it is a good start. It also provides a couple of places the plant is located and talks about its origin.
2 Agricultural Research Service. National Plant Germplasm System. United States Department of Agriculture, 2015. Web. 27 Sept. 2015. < http://www.ars-grin.gov/ >.
This is a very interesting site. It is not within the scope of this course and so I would not recommend it as a source. However, it appears to be a site where you can request germplasms of the different plants. In addition, it talks about the source history of the plant and provides a list of collectors. There is so specific information on ID characteristics of the plant. It does however provide some great photos of different key features of the plants. It also provides references to scholarly work if you wanted to further explore a specific plant. In summary, it is an interesting, but unfortunately not relevant site.
3 Edlin, Herbert. The Tree Key: 235 Species Described. Holland: BAS Printers Limited. 1978. Print.
A great pocket-size guide. It is slightly out-dated feeling but does have a good selection of identifying photos and provides a page of information for each of the 235 species it lists. Unfortunately, not many of the species we looked at in list 3 were found within this book but I could see it being very useful to carry around with you to identify trees and shrubs that cross your path. It also has a section on how trees look in there surrounds which was not specifically relevant but nonetheless interesting to read. In summary, a good little guide to have on hand but not necessarily useful for this specific course.