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Northwest Conifers

MacNab Cypress – Cupressus macnabiana Speaker

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MacNab Cypress at Hoyt Arboretum


 Map

USGS Distribution Map

Leaves: Scaled, white resin dots

Cones: up to 1", round

Bark: Brown, furrowed

Where:  Rare in southwest Oregon

  

Leaves: The tiny scaled leaves, which wrap around branchlets, are gray-green with gland dots that produce a white resin.

Cones: 1/2 - 1", round with 6 or 8 scales, each with an erect conic point.  The cones often remain closed until a wildfire releases the seeds.

Bark: The brown bark is furrowed on large trunks.

Where it grows: Foothills of northern California. Also found at two locations in southwest Oregon (Tree on the map). See Cypress Species in Oregon by Frank Callahan.

Names: Named after James MacNab, curator of the Royal Botanic Garden in Edinburg. Other names: Shasta Cypress. Recently some have proposed removing North American cypresses from Cupressus and placing them in a new genus, Hesperocyparis. Others have argued for keeping North American cypresses in Cupressus. For more information, see The Gymnosperm Database.

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© 2016 Ken Denniston