Chamaecyparis lawsoniana Lawson's Cypress

Native only in the Klamath and Siskiyou Mountains of northern California and southern Oregon, where it is known as Port Orford Cedar. Lawson’s Cypress was brought to Britain as seed by William Murray in 1854 for Messrs Lawson of Edinburgh, hence its more popular name. It is commonly planted in parks, cemeteries, gardens and along roadsides, but it is most abundant in West Glamorgan in conifer plantations where it is often planted to provide shelter along the roadside edges of Larch and Sitka Spruce coupes, particularly in the Vale of Neath. Notable maiden specimens occur in Singleton Park, Swansea. Like many other conifers from the Pacific Northwest, it grows well in the relatively mild, oceanic climate of South Wales and will set seed freely. It is naturalised in various places in West Glamorgan, where it can be regarded as a neophyte alien.

Neophyte