Casuarina equisetifolia --Australian Pine--

HORSETAIL TREE'. Fast-growing tree to 60 feet, with weeping grey-green foliage and 1" cones. Australia. Zone 9. Stands drought down to 8" rain per year, and stands salt spray and is a good dune stabilizer. Nitrogen-fixing. The hard wood is used for tools, and burns with great heat, "Called the best firewood in the world."—National Academy of Sciences.