![]() virginiana, and often hybridizes with it where their ranges meet on the Great Plains. Juniperus scopulorum is closely related to J. One particular individual, the Jardine Juniper in Utah, is thought to be over 1,500 years old, while a dead trunk found in New Mexico was found to have 1,888 rings older trees in the same area are suspected to exceed 2,000 years. Limb essential oil is primarily α-pinene and leaf essential oil is primarily sabinene. ![]() Essential oil extracted from the trunk is prominent in cis-thujopsene, α-pinene, cedrol, allo-aromadendrene epoxide, (E)-caryophyllene, and widdrol. Rocky Mountain juniper is an aromatic plant. It is dioecious, producing cones of only one sex on each tree. The pollen cones are 2–4 mm ( 3⁄ 32– 5⁄ 32 in) long, and shed their pollen in early spring. The seed cones are berry-like, globose to bilobed, 5–9 mm ( 3⁄ 16– 11⁄ 32 in) in diameter, dark blue with a pale blue-white waxy bloom, and contain two seeds (rarely one or three) they are mature in about 18 months and are eaten by wildlife. The juvenile leaves (on young seedlings only) are needle-like, 5–10 mm long. The leaves are arranged in opposite decussate pairs, or occasionally in whorls of three the adult leaves are scale-like, 1–3 mm long (to 5 mm on lead shoots) and 1–1.5 mm ( 1⁄ 32– 1⁄ 16 in) broad. The shoots are slender, 0.7–1.2 millimetres ( 1⁄ 32– 1⁄ 16 in) diameter. Juniperus scopulorum is a small evergreen conifer reaching 5–15 metres (16–49 feet), rarely to 20 m, tall, with a trunk up to 1 m (3 ft 3 in), rarely 2 m, in diameter.
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