Thuja plicata Donn & D. Don Natural History Museum ... Biogeographical Region 73 - Northwestern U.S.A. Collector Wilkes Explor. Exped. Expedition United States Exploring Expedition Collection Date ...

Thuja Green Giant trees forming a privacy barrier in a yard© Photo Parrot/Shutterstock Tall, green privacy hedge made up of emerald green arborvitae trees© Ahanov Michael/Shutterstock ...

There are five extant species of Thuja, all of which are small to large evergreen trees. Two of these species are native to North America, Thuja occidentalis and Thuja plicata, the latter of which ...

IT was noted by me in 1926 (Proc. Roy. Phys. Soc., vol. 21, Part 2; 1926) that the different species of Ostrea can be grouped into two categories, the monæcious and the diœcious. I also ...