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''Arbutus xalapensis'', commonly known as the Texas Madrone, Naked Indian Tree or Texas Madroño, is a species of flowering plant in the heather family. It is native to Mexico, Central America, and the southwestern United States (western Texas and New Mexico).〔(Biota of North America Program 2014 county distribution map )〕〔(SEINet, Southwestern Biodiversity, Arizona chapter ) photos, description, distribution map〕 It is found in canyons and mountains, on rocky plains, and in oak woodlands, at altitudes of up to 3,000 m (10,000 feet) in the south of the range, but lower, down to 600 m (1800 feet) in the north of the range. ''Arbutus xalapensis'' is a large shrub or small to medium-sized evergreen tree growing to 5–25 meters (17-84 feet) tall with a trunk up to 50 cm (20 inches) in diameter, with smooth orange-brown bark peeling in thin sheets. The size varies regionally with available rainfall, with small, shrubby plants in dry areas such as western Texas and New Mexico, and larger trees in moister areas of Mexico; plants in Texas, New Mexico, and the far northeast of Mexico are distinguished as a variety, ''A. xalapensis'' var. ''texana'', or even a distinct species ''A. texana'', by some botanists, but others do not regard these as distinct.〔(Flora of North America, ''Arbutus xalapensis'' Kunth, 1819. Texas madrone )〕 The leaves are oblong to lanceolate, 5–17 cm (2.0-6.8 inches) long and 1.5–5 cm (0.6-2.0 inches) broad, with an entire or serrated margin. The flowers are bell-shaped, white or pale pink, 5–10 mm long, produced in loose panicles. The fruit is a rough-surfaced edible red berry 1 cm (0.4 inches) in diameter, containing numerous small seeds.〔 File:Arbutus xalapensis flowers 1.JPG|Flowers File:Texas Madrone in Guadalupe Mountains.JPG|Berries ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arbutus xalapensis」の詳細全文を読む スポンサード リンク
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