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Tree or large shrub; branchlets terete or quadrangular, in decussate arrays. Leaves opposite, in 4 ranks; adult leaves appressed to divergent, scale-like, rhomboid, free portion of long-shoot leaves up to 4 mm long; abaxial gland present or absent. Male cones with 4-10 pairs of sporophylls, each sporophyll with 3-10 pollen sacs. Female cones maturing in 1-2 years, generally persisting closed for many years, or until opened by fire; globose or oblong, 10-40 mm in diam.; scales in 3-6 pairs, valvate, peltate, thick and woody, persistent. Seeds 5-20 per scale, lenticular or faceted, narrowly 2-winged.
Trees to 25 m tall; bark smooth when young, remaining so or becoming rough, furrowed, and fibrous; crown conical when young, becoming broadly columnar with age, dense; branches ascending, stout; ultimate branchlets 4-angled, 1-2 mm in diam. Leaves bluish green, slightly glaucous, ridged abaxially, with a conspicuous abaxial gland, apex acute. Pollen cones 2-5 × ca. 2 mm; microsporophylls mostly each with 4-6 pollen sacs. Seed cones gray or brown, often glaucous initially, globose or oblong, mostly 2-3 cm; cone scales 6-8, each fertile scale with numerous seeds. Seeds mostly 4-6 mm.
Evergreen tree, up to 30 m high, with a narrow, pyramidal crown on young trees becoming broader and open when older. Leaves greyish when young, becoming glaucous; resinous-glandular, emitting a disagreeable odour when crushed. Cones up to 30 mm in diameter.
