Monterey cypress comes in two forms (two species): Cupressus macnabiana (Monterey cypress / Macnab's cypress / California cypress / California mountain cypress) appears to be endemic to California and not grown elsewhere.
Cupressus macrocarpa (Monterey cypress / macrocarpa), which does also grow in California, has also been successfully transplanted to Australia, New Zealand, Hawaii and Kenya.
I am fairly confident that everything on this page is one species or the other of Monterey cypress and there seems to be little if any distinction between the lumber of the two.
my samples: NOTE: these pics were all taken in very bright incandescent lighting --- colors will vary under other lighting conditions
both sides of a sample plank of Monterey cypress / Cupressus macrocarpa --- HUGE enlargements are present. This sample was loaned to me by Mark Peet whom I thank for this and other contributions to the site.