Cupressus macnabiana

Superregnum: Eukaryota
Regnum: Plantae
Divisio: Tracheophyta
Divisio: Pinophyta
Classis: Pinopsida
Ordo: Pinales

Familia: Cupressaceae
Subfamilia: Cupressoideae
Genus: Cupressus
Species: Cupressus macnabiana
Name

Cupressus macnabiana A.Murray bis, Edinburgh New Philos. J., n.s., 1: 293 (1855).
Synonyms

Homotypic
Callitropsis macnabiana (A.Murray bis) D.P.Little, Syst. Bot. 31: 474 (2006).
Hesperocyparis macnabiana (A.Murray bis) Bartel, Phytologia 91: 182 (2009).
Neocupressus macnabiana (A.Murray bis) de Laub., Novon 19: 304 (2009).
Heterotypic
Cupressus glandulosa Hook. ex Gordon & Glend., Pinetum: 64 (1858).
Juniperus macnabiana P.Lawson ex Gordon & Glend., Pinetum: 64 (1858), nom. inval.
Cupressus nabiana Mast., Gard. Chron., ser. 3, 9: 403 (1891).

Cupressus macnabiana Wood

References
Primary references

Murray, A. 1855. Edinburgh New Philos. J. ser. 2, 1: 293, t. 11. ("M'Nabiana").

Additional references

Little, D.P. 2006. Evolution and circumscription of the true Cypresses (Cupressaceae: Cupressus). Systematic Botany 31(3): 461–480. DOI: 10.1600/036364406778388638 Paywall BioOne Paywall JSTOR Hybrid open access journal Reference page.

Links

USDA, ARS, Germplasm Resources Information Network. Cupressus macnabiana in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service.
USDA NRCS PLANTS Profile

Vernacular names
English: MacNab's Cypress
Cupressus macnabiana (MacNab cypress or Shasta cypress) is a species of cypress in western North America.[3]

Distribution

Cupressus macnabiana is endemic to northern California. Cupressus macnabiana is one of the most widely distributed of all the native California cypresses, found growing in chaparral, oak woodlands, and coniferous woodlands habitats along the inner northern California Coast Ranges and the foothills of the northern Sierra Nevada. MacNab cypress is often associated with ultramafic soils.[4]
note prominent "horns" (umbos) on top two cone bracts
Description

Cupressus macnabiana is an evergreen shrub or small tree, 3–12 metres (9.8–39.4 ft) (rarely to 17 metres (56 ft)) tall, with a spreading crown that is often broader than it is tall. The foliage is produced in dense, short flat sprays (unlike most other California cypresses, which do not have flattened sprays), bright glaucous gray-green, with a strong spicy-resinous scent. The leaves are scale-like, 1–2 mm long with an acute apex, and a conspicuous white resin gland on the center of the leaf. Young seedlings produce needle-like leaves up to 10 mm (0.4 inches) long in their first year.[5]

The seed cones are oblong-ovoid to cuboid, 15–25 mm long and 13–20 mm broad, with six (rarely four or eight) scales, each scale bearing a prominent umbo; they are strongly serotinous, not opening to release the seeds until the parent tree is killed by wildfire. This enables heavy seed release to colonize the bare, fire-cleared ground. The pollen cones are 3–4 mm long, and release their pollen in the fall.[5]
See also

California interior chaparral and woodlands- (subecoregion)
Fire ecology

References

Farjon, A. (2013). "Cupressus macnabiana". IUCN Red List of Threatened Species. 2013: e.T42222A2962703. doi:10.2305/IUCN.UK.2013-1.RLTS.T42222A2962703.en. Retrieved 12 November 2021.
The Plant List, Cupressus macnabiana A.Murray bis
A. Farjon. 2005. A Monograph of Cupressaceae and Sciadopityaceae. Royal Botanic Gardens, Kew. ISBN 1-84246-068-4.
C. Michael Hogan. 2010. Leather Oak, Quercus durata. Encyclopedia of Earth. National Council for Science and Environment. Washington DC

Flora of North America: Cupressus macnabiana

Farjon, A. (2013). "Cupressus macnabiana". IUCN Red List of Threatened Species. 2013: e.T42222A2962703. doi:10.2305/IUCN.UK.2013-1.RLTS.T42222A2962703.en. Retrieved 12 November 2021.
Stuart, J. D.; J. O. Sawyer (2001). Trees and Shrubs of California. University of California Press. ISBN 0-520-22110-9.
Wolf, C. B. & Wagener, W. E. (1948). The New World cypresses. El Aliso 1: 195-205.