Pahautea, kaikawaka, NZ cedar
Vascular – Native
Gymnosperm Trees & Shrubs
The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.
2n = 22
Current conservation status
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley.
2012 | Not Threatened
Previous conservation statuses
2009 | Not Threatened
2004 | Not Threatened
Endemic. North and South Islands. In the North from Te Moehau, Te Aroha and Mt Pirongia south.
Montane to subalpine (250-1200 m.a.s.l.) but exclusively upper montane in northern part of range. Usually in mixed cloud forest, often at the margins where forest grades into subalpine scrub or wetlands. This species seems to prefer regions of moderate to high rainfall and long periods of cloud cover.
Tree 25(-30) m tall and 1.0-1.5 m d.b.h., or a shrub in open conditions, evergreen, monoecious. Bark thin, scaly, greyish-brown, exfoliating in longitudinal strips. Branches long, spreading or ascending, arranged in dense tufts above each other, forming a pyramidal crown in young trees, conical or irregular with a clear bole in old trees. Foliage flattened sprays in young trees, in old trees more irregular and ascending, ultimate branchlets subopposite to alternate, 5-40 mm long, entirely covered with leaves, changing with age of plant from flattened to ± quadrangular, persistent. Leaves decussate, on lateral branchlets, short, decurrent, imbricate, dimorphic in young trees, facials small, rhombic, 1.5-2.0 × 1..0 mm, apiculate to acute, appressed, partly covered at base by larger 2.0-6.0 × 1.5-2.5 mm, divergent, bilaterally flattened, slightly curved laterals with entire margins and free apices, leaves on mature trees smaller, nearly monomorphic; amphistomatic, stomata on facials at base, on laterals much reduced on adaxial side, abaxially in a short, conspicuous band of irregularly but densely arranged stomata, adaxially dull dark green or yellow-green with whitish-green stomatal band, bearing a single resin cavity, eglandular. Pollen cones terminal, solitary, 2.5-5.0 mm, subglobose to ovoid, yellowish-green maturing light brown; microsporophylls decussate, 8-14, peltate, margins entire, bearing 4 abaxial yellow, microsporangia containing spherical pollen. Seed cones terminal on branchlets with monomorphic leaves of equal size, initially consisting of 2 decussate pairs of acute, 3-4 mm long, spreading bracts subtended by 4-5 similar but gradually smaller leaf pairs, the upper pair developing within one growing season to become thinly woody, together forming a cone 8-12 mm long. Bract-scale complexes 7-10 mm long, ± finely rugose, recurved in upper half above the abaxially exserting bract, subtended by the lower, smaller (3-4 mm long) less modified pair. Ovules 4, erect. alternating with each fertile bract. Seeds 2-4, 2-3 mm long, ovoid, flattened, with an acute apex, brown, with a whitish hilum and 2 opposite, thin, unequal, membranous wings, smaller 1 mm wide, larger, irregularly oval-oblong, 4-5 × 2.3 mm, yellowish brown. Cotyledons 2, juveniles leaves only on seedlings, ± acicular, on lower stem in whorls of 4 but soon decussate, bilaterally flattened, acuminate, the facials only slightly smaller, transitional leaves prevalent through much of life of young trees.
Easily distinguished from kawaka (Libocedrus plumosa) by the ultimate branches ± quadrangular rather than flattened, by the facial leaves only slightly smaller than lateral leaves (< half the size of the laterals in L. plumosa); and by the free part of the bract 1/3 the size of the cone scale beyond which it does not extend, rather than half the size of the cone scale and exceeding beyond it.
August - November
August - July
Easily grown from fresh seed. Can be grown from hard wood cuttings but these are often slow to take and results variable. Does best in a deep, well mulched, moist, fertile soil. Makes an excellent specimen tree. Libocedrus bidwillii is however, better suited to cooler climates. It does not like drought or humidity.
libocedrus: Frankincense cedar
bidwillii: Named after the botanist - John Carne Bidwill (born 1815 and died 16 March 1853)
Fact sheet prepared for NZPCN by P.J. de Lange (13 January 2012).Description adapted from Farjon (2005).
References and further reading
Farjon, A. 2005: A monograph of Cupressaceae and Sciadopitys. Royal Botanic Gardens, Kew. ISBN 1842460684.
Please cite as: de Lange, P.J. (Year at time of access): Libocedrus bidwillii Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/libocedrus-bidwillii/ (Date website was queried)