Hesperocyparis goveniana

(Gordon) Bartel 2009

Common names

Gowen cypress.

Taxonomic notes

Synonymy: see POWO (accessed 2023.12.16). Molecular studies have shown a very close relationship with Hesperocyparis abramsiana and H. pygmaea. Each has also been described as a variety or subspecies of H. goveniana (Little 2006).

Description

"Shrubs or small trees usually to 10 m, but to 50 m under favorable conditions, or bearing cones at as little as 2 dm on shallow hardpan soils; crown globose to columnar, dense or sparse. Bark smooth or rough, fibrous. Branchlets decussate, 1-1.5 mm diam. Leaves without abaxial gland or sometimes with embedded abaxial gland that does not produce drop of resin, not glaucous. Pollen cones 3-4 × 1.5-2 mm; pollen sacs 3-6. Seed cones globose, 1-2.5(-3) cm, grayish brown, not glaucous; scales 3-5 pairs, smooth, umbo nearly flat at maturity. Seeds 3-4(5) mm, dark brown to jet black, sometimes slightly glaucous" (Eckenwalder 1993). H. goveniana is distinguished from H. abramsiana by its smaller (13-20 mm long) cones and darker (brown-black, not glaucous) seeds (Farjon 2005), and from H. pygmaea by its pyramidal crown and shorter, stiff leader (Wolf 1948).

Distribution and Ecology

USA: California, at 60-800 m in coastal closed-cone pine forests, especially on sterile soils (Eckenwalder 1993). The type variety occurs naturally only at two groves in Monterey County, located in the S.F.B. Morse Botanical Reserve (locally referred to as Huckleberry Hill) and in Point Lobos State Park. At the former site the trees are growing in the understory of a fairly old postfire stand of Pinus radiata (which is one of the only natural occurrences of that species). The trees are healthy, relatively large, and there is a small amount of regeneration in understory gaps, indicating that the species is fairly shade-tolerant, as are other cypresses located near or north of this latitude in western North America. At Huckleberry Hill, the trees are growing with Pinus muricata on an excessively well-drained, coarse, very nutrient-poor sandy soil. A large part of the stand was burned in the Morse Fire in 1987 and the remainder has regenerated from an earlier fire. The trees grow very slowly, the tallest are about 6 m tall and 20 cm dbh, and in some areas they can only form a prostrate shrub cover. This very unusual soil type also hosts a variety of rare angiosperm species. Similar soils occur at the North Coast sites of H. pygmaea and the Mendocino site of Pinus contorta subsp. contorta var. bolanderi.

The species is reported to be hardy to Zone 8 (cold hardiness limit between -12.1°C and -6.7°C) (Bannister and Neuner 2001). See also Thompson et al. (1999).

Distribution of H. goveniana. Data from USGS (1999).

Remarkable Specimens

The largest specimen has height 12.2 meters, dbh 53 cm, and is at Point Lobos State Park (American Forests 2000). The largest tree of H. goveniana in New Zealand is 88.8 cm dbh and 15.6 m tall (NZNTT 2014).

Ethnobotany

No data as of 2023.12.16.

Observations

The grove at Point Lobos State Park is in an upland portion of the preserve, not typically open to visitors, but a visit can be arranged with park administration (Vladimir Dinets (email, 2000.03.16). The S.F.B. Morse/Huckleberry Hill Reserve entrance can be reached through the Morse Drive entrance to Pebble Beach ($10 fee), or by hiking west from pullouts along CA Highway 68 about a half-mile south of the Morse Drive entrance to Pebble Beach.

Remarks

The species was named by George Gordon in honor of James Robert Gowen, Secretary of the Horticultural Society of London and thus Gordon's boss. The work of finding and describing the species, and getting it safely home to London, was done by Karl Theodor Hartweg (1812-1871), a German who spent 1845-1848 plant collecting in California at the behest of the Horticultural Society of London. Hartweg, like David Douglas, was a protegé of William Jackson Hooker. He first found this cypress "on the western declivity of the mountains of Monterey in Upper California, within two miles of the sea shore, in company with Pinus muricata, forming a dense bush from 6 to 10 feet in height" (Gordon 1849). This description fits the Huckleberry Hill grove (P. muricata is uncommon in this area), but he could have been in a grove that has since been extirpated. Hartweg sent seeds home from California, and Gordon described the species on the basis of plants grown from those seeds. Hartweg later recounted his adventures in several issues of the Horticultural Society's Journal in 1847-1848 (here's an example). Hartweg had a highly productive career, collecting widely from 1836 to 1848 in Colombia, Ecuador, Guatemala, Jamaica, and Mexico, discovering many orchids and other remarkable plants. His later years were spent as director of the Swetingen Gardens in Baden, Germany. His work among the conifers is commemorated in the alpine pine of Mexico and Central America, Pinus hartwegii.

Citations

American Forests 2000. The National Register of Big Trees 2000. Washington, DC: American Forests.

Bartel 2009: described in Adams, R. P., J. A. Bartel and R. A. Price. 2009. A new genus, Hesperocyparis, for the cypresses of the western hemisphere. Phytologia 91(1):160-185.

Gordon, George. 1849. New plants, etc., from the Society's garden. 30. Cupressus goveniana Gordon. Journal of the Horticultural Society of London 1849(4): 295-296. http://www.cupressus.net/CUgovenianaGordon.html, courtesy of the Cupressus Conservation Project website.

New Zealand Notable Trees Trust [NZNTT]. 2014. Record NNR/1222. register.notabletrees.org.nz/tree/view/1222, accessed 2014.06.16.

See also

Elwes and Henry 1906-1913 at the Biodiversity Heritage Library. This series of volumes, privately printed, provides some of the most engaging descriptions of conifers ever published. Although they only treat species cultivated in the U.K. and Ireland, and the taxonomy is a bit dated, still these accounts are thorough, treating such topics as species description, range, varieties, exceptionally old or tall specimens, remarkable trees, and cultivation. Despite being over a century old, they are generally accurate, and are illustrated with some remarkable photographs and lithographs.

Adams, R. P. and J. A. Bartel. 2009. Geographic variation in the leaf essential oils of Hesperocyparis (Cupressus) abramsiana, H. goveniana and H. macrocarpa: Systematic implications. Phytologia 91(1):226-243.

Adams, R. P. and J. A. Bartel. Infraspecific variation in Hesperocyparis goveniana and H. pygmaea: ISSRs and terpenoid data. Phytologia 91(2):277-286.

Farjon (2005) provides a detailed account, with illustrations.

Griffin and Critchfield (1972).

Peattie 1950.

Threatened Conifers of the World.

U.S. Fire Administration. 1987. Urban Wildlands Fire, Pebble Beach, California. Appendix H, Vegetation Damage Assessment. Report USFA-TR-007. Available at Google Books, accessed 2014.02.20 (note that the authors made some errors of identification concerning Monterey and Bishop pines).