Pinus thunbergiana  Japanese black pine Pinaceae PITH*; Q, j (planted), tl; K, gt (planted);

Pinus thunbergiana.Courtesy of Smithsonian Institute.R.A. Howard, hosted by the USDA-NRCS PLANTS Database. (Accessed 8/2014).

Pinus thunbergiana.Courtesy of Smithsonian Institute.R.A. Howard, hosted by the USDA-NRCS PLANTS Database. (Accessed 8/2014).

Pinus thunbergiana is an evergreen gymnosperm tree to 30 m, usually irregular in form branches often somewhat drooping, bark flaky-fissured, blackish, winter buds grayish-white, cylindrical, ca 1.5 cm, scales appressed, fringed, not resinous. 

Leaves needle-like in bundles of two, 6-11 cm long, dark, glossy green, tip sharp-pointed, twisted, margins finely toothed, lines on each surface, sheath 1 cm, ending in 2 long, thread-like segments, densely crowded at ends of twigs, living for 3-5 years.

Flowers: None. Gymnosperm. Monoecious; male cones yellow, deciduous; cones 4-6 cm, egg to cone-shaped, short-stalked, maturing in two years (Dirr 1990; Rehder 1968). 

Fruit: None. Seeds winged. 

Wetland status: NL. 

Frequency in New York City: Infrequent in natural areas. 

Origin: Japan. 

Habitat: Planted and escaped, sometimes locally dominant in dry, sandy coastal soils pH 5.5-8 (USDA, NRCS 2010) especially in Gateway National Recreation Area. 

Notes: Susceptible to a disease associated with the black turpentine beetle (Dendroctonus terebrans).