Cuppressus Goldcrest

Cupressus Macrocarpa Goldcrest, full grown 16ft./5metres. Width 8ft./2.5metres. Plant 3ft/1metre apart, trees 3ft. high/1metre.
A dwarf type is Cupressus Lawsoniana Aurea Densa. Full grown height 6ft,/2metre, width 3ft./1metre, plant 2ft/65mm apart.

correction - name is Chamaecyparis lawsoniana 'Aurea Densa', a plant in my collection is 5ft tall at 20yrs old. not really much use as a proper hedge.

My wording is corect. Chamaecyparis is the Genus, Cupressus is the species.
Try Cupressus Lawsoniana Castle wellen or Cupressus Macrocarpa Luten

Doctorbob,
With all due respect your comments are incorrect and a little confusing. I will try and explain as simply as I can.
First your reference to Cupressus lawsoniana is extremely outdated nomenclature.
Chamaecyparis and Cupressus are both the genus or genera.
Chamaecyparis lawsoniana, and Cupressus macrocarpa are both the species. Chamaecyparis, Cupressus, and x Cupressocyparis are all cypresses and members of the Cupressaceae family.
There is no Cupressus Lawsoniana Castle wellen or Cupressus Macrocarpa Luten, but there is a
x Cupressocyparis leylandii 'Castlewellan', and a Cupressus macrocarpa 'Lutea'.