Libocedrus plumosa (Kawaka) is a species of Libocedrus, endemic to New Zealand, occurring on North Island, and locally at the north end of South Island near Nelson (41° S). It grows from sea level up to 600 m altitude in temperate rainforests. It is threatened by habitat loss.
It is an evergreen coniferous tree growing to 30–35 m tall, with a trunk up to 3 m diameter. The foliage is arranged in flattened sprays; the leaves are scale-like, arranged in opposite decussate pairs on the shoots; the facial leaves are 1–2 mm long and 1 mm broad, and the lateral leaves distinctly larger, 2–5 mm long and 1.5–2 mm broad. The seed cones are cylindrical, 12–18 mm long, with four scales each with a prominent curved spine-like bract; they are arranged in two opposite decussate pairs around a small central columella; the outer pair of scales is small and sterile, the inner pair large, each bearing two winged seeds. They are mature about six to eight months after pollination. The pollen cones are 3–5 mm long.
It has been planted in several parts of the British Isles, even as north as Castlewellan, Northern Ireland.