Gymnosperm Database
Link to jump to start of content Home Topics Bookstore Links Site Map Contact Us

Search

photo

Foliage on a sapling at the Royal Tasmanian Botanical Gardens [C.J. Earle, 2015.02.25].

photo

Foliage on a sapling at the Royal Tasmanian Botanical Gardens [C.J. Earle, 2015.02.25].

photo

Foliage on two small saplings at the Royal Tasmanian Botanical Gardens [C.J. Earle, 2015.02.25].

photo

A portion of the isotype, collected 1947.12.28 by J.T. Buchholz, showing fertile twigs bearing female cones. Note the bract-scale complexes (the seed cones) and the spiny free tips of the scales. The size of the cones and length of the spines are important characters in identificaton of Libocedrus species, as are the morphology of the facial and lateral leaves.

photo

Distribution map (GBIF, accessed 2016.11.26).

 

Valid HTML 4.01 Transitional

Conservation status

Libocedrus chevalieri

Buchholz 1949

Common names

Taxonomic notes

Syn.: Stegocedrus chevalieri (J.T. Buchholz) Doweld 2001. Type: New Caledonia, Mont Humboldt, J.T. Buchholz 1567. Few studies have been performed on Libocedrus, but work to date suggests that the New Caledonian species are all closely related; see Libocedrus for discussion.

Description

A shrub or small tree to 5 m tall, usually with several stems branching near the base, with numerous ascending branches forming a dense, often rounded crown. Bark brown, scaly, peeling in irregular strips or plates. Twigs arranged on the branches in frond-like sprays, the twigs alternate to subopposite, flattened (juvenile) to 4-angled (adult) in cross-section, 3-4 mm across, entirely covered with leaves. Facial and lateral leaves very different in juvenile leaves, but very similar in adult leaves. In juveniles, laterals are much larger (2.5-5 mm long) than facials, acute; in adults, all leaves 2-3 mm long, blunt, touching the base of the next leaf along the twig. Facial leaves keeled. Pollen cones terminal, solitary, 8-10 × 2.5-3.5 mm with 16-24 microsporophylls. Seed cones 10-12 mm long, the spiny free tips of the bracts 6-7 mm long. Seeds about 6 mm long with a 12 mm wing (Eckenwalder 2000, Farjon 2010).

Distribution and Ecology

New Caledonia: there are only 3 known populations: in the S, at Mt Humboldt and Mt. Kouakoue; in the N, at Poindimie. Grows at 650-1,620 m elevation, which is near the highest summits, usually in maquis near the contact zones between schists and serpentines. Precipitation is high (ca. 4,000 mm/yr) but due to high runoff and thin soils, drought does occur. The northernmost population has no protected status. Growth is slow, regeneration uncommon, and fire is a risk, factors that contribute to the "critically endangered" conservation status (Eckenwalder 2000, Farjon 2010).

Zone 10 (cold hardiness limit between -1°C and +4.4°C) (Bannister and Neuner 2001).

Big tree

Oldest

Dendrochronology

Ethnobotany

No known use by indigenous peoples, no known use in horticulture, and very uncommon in botanical gardens (Farjon 2010).

Observations

Remarks

The epithet recalls L. Chevalier, a plant collector in New Caledonia in the 1940s and 1950s (Farjon 2010).

Citations

Buchholz, J.T. 1949. Additions to the coniferous flora of New Caledonia Bulletin du Muséum d'histoire naturelle sér. 2, 21:279-286 (p.283).

See also

Association Endemia, a site devoted to New Caledonian species. Has excellent photos, a range map, and other information. In French.

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

Last Modified 2016-11-27