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cupressus arizonica
''Cupressus arizonica'', the Arizona cypress, is a North American species of trees in the cypress family. It is native to the southwestern United States (Arizona, Utah, southwestern New Mexico, and southern California, with a few populations in southern Nevada and in the Chisos Mountains of western Texas), and in Mexico (Coahuila, Chihuahua, Sonora, Durango, Tamaulipas, Zacatecas and northern Baja California).〔(SEINet, Southwestern Biodiversity, Arizona chapter ) photos, description, distribution map〕〔 In the wild, the species is often found in small, scattered populations, not necessarily in large forests. An example occurrence is within the Sierra Juárez and San Pedro Mártir pine-oak forests of Mexico,〔National Geographic. 2001〕 where it is found along with Canyon Live Oak and California Fan Palm.
==Description==
''Cupressus arizonica'' is a coniferous evergreen tree with a conic to ovoid-conic crown. It grows to heights of 10–25 m (32.8-82.0 ft), and its trunk diameter reaches 0.5 m (19.7 in). The foliage grows in dense sprays, varying from dull gray-green to bright glaucous blue-green. The leaves are scale-like, 2–5 mm long, and produced on rounded (not flattened) shoots. The seed cones are globose to oblong, 15–33 mm long, with 6 or 8 (rarely 4 or 10) scales, green at first, maturing gray or gray-brown about 20–24 months after pollination. The cones remain closed for many years, only opening after the parent tree is killed in a wildfire, thereby allowing the seeds to colonize the bare ground exposed by the fire. The male cones are 3–5 mm long, and release pollen in February–March.〔(Flora of North America, ''Cupressus arizonica'' Greene, 1882. Arizona cypress, Arizona smooth cypress, Cuyamaca cypress, Piute cypress, cedro, cedro blanco, ciprés de Arizona )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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