North American red fir, also known as redwood fir or long-leaved world valley, is a towering evergreen tree that can grow up to 112 meters in height with a dry diameter of 8-10 meters. The dry bark of the tree is soft and reddish-brown.

The leaves on the lateral branches are linear and flat, with a length ranging from 0.8-2cm. These leaves have a dark green surface with concave midribs and two white stomatal bands on the abaxial surface, arranged in a pinnately biseriate fashion.

The leaves on the main branches, on the other hand, are ovate-oblong elliptic, with a length of 6mm, and arranged spirally. The cones mature in the same year, have peltate fruit scales, and contain 15-20 pieces.

North American redwoods are indigenous to the west coast of the United States and thrive in cool, moist climates with well-drained soil. They are weakly masculine, grow rapidly, with a height of up to 27 meters within 20 years, have strong root sprouting power, and can easily survive cuttings.

This tree is one of the world's most renowned trees, with a straight trunk and a majestic, long-lived life.

The North American redwood belongs to the subfamily Sequoia, which is comprised of three subfamilies of redwoods that exist today, including giant firs and sequoias.

Although North American redwoods and giant sequoias are close relatives with similar traits and not far away in origin, they are different species and genera. Giant fir grows on the west side of the Sierra Nevada sloping valley, while coast red fir is distributed in the coastal zone from Monterey to Oregon, covering an area more than 800 km long and about 500 km wide.

While the coast redwood is the emperor of the Muir Woods, it is not the only family in the forest. Below it, there are numerous subjects, including other plants, forest animals, and hundreds of species of fungi. In summer, one can spot the rare large wood thief with many fine branches breeding along the stream. This plant is more ancient than the red fir.

Many valuable California laurels in the forest have an exceptional fragrance during the flowering season. The leaves of this tree are a common ingredient in American mourning. A very conspicuous laurel grows almost catty to seek sunlight from the shade of the coast redwoods.

As time passes, the center of gravity of the laurel tree tilted too much, and it fell headlong into the distance of more than 10 meters, creating a one-way wooden arch bridge.

Many sturdy branches have grown on the bridge, and the gray squirrels and golden chipmunks scurry through them, making it a unique sight in the forest. Other animals in the forest include black-tailed deer, raccoons, gray foxes, and tentacles.

The forest also has many birds, including woodpeckers, hummingbirds, dark-crowned blue jays, kingfishers, owls, and red-tails.

The distribution area of the North American redwood is closer to the coast, and the altitude of the distribution area generally does not exceed 700 meters. Therefore, the North American redwood is also called "coastal redwood."

While both species of trees live on the west coast of the United States, there is no intersection between the two species in the wild.