Which species is identified as Western Hemlock?

The species identified as Western Hemlock is Tsuga heterophylla. This coniferous tree is native to the western regions of North America, particularly in temperate rainforests. Western Hemlock is characterized by its drooping branches and is commonly found in moist, shaded areas, often alongside other conifer species. Its needles are flat and vary in length, which aligns with its name, "heterophylla," meaning different leaves. This species plays a significant role in the ecosystem, providing habitat and food for various wildlife and contributing to soil stabilization.

In contrast, Tsuga mertensiana, commonly known as Mountain Hemlock, is another species of hemlock found at higher elevations. Picea sitchensis, or Sitka Spruce, is a different genus altogether and is notable for its tall stature and valuable timber. Abies lasiocarpa, or Subalpine Fir, is also not a hemlock but rather a fir tree, distinguished by its cone shape and the arrangement of its foliage. Understanding the specific characteristics of each species helps reinforce the identification skills necessary for horticulture and forestry practices.