Chamaecyparis lawsoniana
Chamaecyparis lawsoniana
Chamaecyparis lawsoniana, known as Port Orford cedar or Lawson's cypress, is a species of conifer in the genus Chamaecyparis, family Cupressaceae. It is native to Oregon and northwestern California, and grows from sea level up to 1,500 metres (4,900 ft) in the valleys of the Klamath Mountains, often along streams.
"LAWSON CYPRESS}} ... This is found in Oregon and California. The majority of trees grow below 3000 feet and are at their best growing about 3 to 15 miles from the coast. It is sometimes found associated with , , , and , but often forms unmixed colonies."
". Cupressus Lawsoniana.—This we consider one of the greatest acquisitions that has been made for many years to our list of hardy s. Its foliage resembles the , but its habit is that of the . As a lawn tree, or for association and planting near water, or in cemeteries where there is room, its beauty of foliage and form renders it in every way desirable. There is a variety of this called Pyramidalis, that is more dense and upright, but to us not as beautiful."
"Port-Orford-cedar (Chamaecyparis lawsoniana) ... is the largest species of its and the largest representative of the Cupressineae in North America. It is a highly valued because of the durability, excellent machinability, light weight, strength, and shock resistance of the wood. It is also valued worldwide as an ."
"The Japanese import Port-Orford-cedar as a substitute for their native , which for centuries has been the favorite wood of Japanese builders and craftsmen. It is highly valued in their woodenware, novelty, and toy industries. Another major use is for construction and repair of s and ."
"is a water-borne invasive root pathogen that is currently affecting Port Orford cedar in riparian zones. Once a tree near a stream is infected the pathogen spreads rapidly down the stream."
"An exotic fungal forest pathogen, , first identified in the Pacific Northwest in 1923, eventually spread throughout much of the Port-Orford-cedar tree’s native range, killing significant amounts of this valuable timber species on high risk sites. In 1997, the started a Port-Orford-cedar breeding program to increase resistant varieties of this tree to be replaced in areas of its native range."
