The upper wood siding which is more blond in color is Siberian Larch, beveled, tongue and groove siding. I think it is 6". The lower siding material is Poplar Bark siding and its finished surface is actually the natural bark. I can't remember what mfr of these we used on that particular job but I have provided a link below to a good web site which has the product illustrated. I have also attached a link to the Siberian Larch products. I hope this is helpful.

http://www.siberianlarchproducts.com/siding.html

http://www.barkclad.com