Needle Juniper - Juniperus rigida
Family: Cupressaceae.
Common Juniper is possibly the most widely distributed tree in the world.
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Often grown as an ornamental or bonsai, the tree species Juniperus rigida is commonly known as "needle" or "temple" juniper. It is native to northern China, Korea, Japan, and the far southeast of Russia (Primorsky Krai), occurring at altitudes of 10-2,200 m. It is closely related to Juniperus communis (Common Juniper) and Juniperus conferta (Shore Juniper), the latter sometimes treated as a variety or subspecies of J. rigida. [1]

A shrub or small tree growing to a height of 10 m and a trunk diameter up to 50 cm. The leaves are evergreen, needle-like, in whorls of three, bright green to yellowish-green, 10-23 mm long and 1-1.3 mm broad, with a single white stomatal band on the inner surface. It is dioecious. The seed cones are berry-like, ripening in 18 months to dark purple or brownish with a variable whitish waxy coating; spherical, 5-9 mm diameter, and have three fused scales in one whorls of three, each with a single seed. Seeds are usually dispersed by birds. The pollen cones are yellow, 3-5 mm long, and fall soon after shedding their pollen in spring. [2]


This Morton Arboretum specimen was started from a cutting 55 years ago.

Native:
  • ASIA-TEMPERATE
    Soviet Far East: Russian Federation - Kamchatka, Sakhalin
    China: China - Gansu, Heilongjiang, Hubei [n.], Jilin, Liaoning, Nei Monggol,
    Ningxia, Shaanxi, Shanxi
    Eastern Asia: Japan - Hokkaido, Honshu, Kyushu [n. & c.], Shikoku [n.]; Korea

Common names:

See also subordinate taxa:

 

References
  1. Colin Tudge, The Tree: A Natural History of What Trees Are, How They Live, and Why They Matter, Reprint (Three Rivers Press, 2007).
  2. NATIONAL AUDUBON SOCIETY, National Audubon Society Field Guide to North American Trees--E: Eastern Region, Chanticleer Press Ed (Knopf, 1980).

 


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