Callitris endlicheri, commonly known as black cypress-pine, is a coniferous tree native to eastern Australia, including regions of Queensland, New South Wales, and Victoria. Typically reaching up to 10 meters tall, it features dark green to grey-green foliage and produces small cones that release numerous winged seeds. Valued for its durable, termite-resistant timber, the tree has been used for fence posts, craftwood, and light construction. It is also planted as an ornamental, for windbreaks, and in apiculture for its pollen.

However, black cypress-pine poses significant ecological risks where it has been introduced. It has become an environmental weed in places like Victoria and Hawaiʻi, where it forms dense thickets that outcompete native vegetation. Its wind-dispersed seeds and persistent seed bank enable it to spread readily, especially after disturbances like fire. While not toxic and not known to invade agricultural systems, its ability to alter ecosystems and reduce biodiversity makes it a species of concern in non-native habitats.