Chamaecyparis thyoides is a to 25 m, slender evergreen tree.
Leaves scale-like to 0.4 cm, tightly overlapping along thin twigs, ca 0.1 cm wide, persistent, enlarging on older branches, aromatic, interior leaves and twigs eventually dying.
Flowers, Fruit none. Cones to 1 cm, angular, at first berry-like, blue-green, scales about 6, becoming brown, opening to disperse small, winged seeds from Oct. through winter.
Wetland status: OBL.
Frequency in New York City: Very infrequent.
Habitat: Normally grows in acid bogs, pH 3.5-5.5. It is unlikely to reproduce in NYC under present high pH, high nutrient environmental conditions. Requires high light for germination and as a seedling, older trees supposedly of intermediate shade tolerance (Burns and Honkala 1990).