- Callitris - Descriptions and images of the Australian-cypresses.
www.botanik.uni-bonn.de/conifers/cu/call/index.htm
- Callitris intratropica - Description, images, and use of the essential oil.
www.bluecypress.com/callitris.htm
- Callitris rhomboidea - Description, range, and image of the Port Jackson Pine.
www.anbg.gov.au/anbg/conifers/callitris-rhomboidea.html
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