Callitris

Shrubs or trees evergreen. Branchlets angled or furrowed-cylindrical, variously oriented. Leaves in whorls of 3–5. Adult leaves scalelike, appressed, abaxial surface keeled or rounded, free portion to 1 mm, abaxial glands absent. Pollen cones solitary or in small clusters, with 4–15 whorls of sporophylls, each with 2–4 pollen sacs. Seed cones maturing in 1–2 years, of 1–2 sizes, often remaining unopened for many years, ovoid or globose, 1–3.5 cm; scales persistent, in 2 equally inserted whorls of 3(–4), valvate, rhombic-deltate, basifixed, thick and woody. Seeds 2–9 per scale, round or 3-angled, broadly 1–3-winged; cotyledons 2.

Distribution

North America, Australia, and New Caledonia.

Discussion

Species 16 (1 naturalized in the flora).

Selected References

Blake, S. T. 1959. New or noteworthy plants, chiefly from Queensland, l. Proc. Roy. Soc. Queensland. 70(6): 33--46.

Garden, J. 1957. A revision of the genus Callitris Vent. Contr. New South Wales Natl. Herb. 2(5): 363--392.

Thompson, J. 1961. Cupressaceae. Contr. New South Wales Natl. Herb., Fl. Ser. 1/18: 46--55.

Thompson, J. and L. A. S. Johnson. 1986. Callitris glaucophylla, Australia's 'white cypress pine'---A new name for an old species. Telopea 2: 731--736.

Lower Taxa

Callitris glaucophylla