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on volcanic alluvial substrate below western rim of Barranca Sirupa with Quercus oblongifolia. Note distinctive weeping habit of foliage
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note pendant branchlets. Bark longitudinally fissured, moderately shreddy
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note pendant branchlets. Bark longitudinally fissured, moderately shreddy
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note pendant branchlets, reddish twigs. Bark longitudinally fissured, moderately shreddy
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note: pendant branchlets, reddish twigs, bark longitudinally fissured, moderately shreddy.
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note: bark longitudinally fissured, moderately shreddy.
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note: bark on young specimen
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note: bark on mature specimen
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note: immature cone (6 mm wide, 4 seeds)
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on silty accumulations of volcanic soil from extrusive tuff substrate on open plateau flat. Note: immature cone (6 mm wide, 4 seeds)
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arroyo drainage between low volcanic rhyolitic tuff hillsides. Very large tree measured at 40' tall, 90 inches in circumference (3 feet above soil line). Voucher collected by R. Spellenberg (NMSU)#14700 at NMC
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arroyo drainage between low volcanic rhyolitic tuff hillsides. Very large tree measured at 40' tall, 90 inches in circumference (3 feet above soil line). Dr. Richard Spellenberg, Professor Emeritus, Biological Sciences. New Mexico State University provides scale for this 40 foot (12 m) specimen
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arroyo drainage between low volcanic rhyolitic tuff hillsides. Very large tree measured at 40' tall, trunk 90 inches in circumference (3 feet above soil line.
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arroyo drainage between low volcanic rhyolitic tuff hillsides. Very large tree measured at 40' tall, trunk 90 inches in circumference (3 feet above soil line.
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arroyo drainage between low volcanic rhyolitic tuff hillsides.
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arroyo drainage between low volcanic rhyolitic tuff hillsides.
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arroyo drainage between low volcanic rhyolitic tuff hillsides.Very large tree measured at 40' tall, trunk 90 inches in circumference (3 feet above soil line. Scale provided by Dr. Richard Spellenberg, Professor Emeritus, Biological Sciences. New Mexico State University
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riparian corridor of small tributary of Rio Verde in narrow canyon cut in volcanic rhyolitic tuff. Plants in volcanic silts, coarse soils, mixed gravels and scattered large boulders of canyon bottomland. This is an extraordinarily tall mature specimen with height inferred by 6'10' figure visible at base of tree as ca. 36+ feet
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riparian corridor of small tributary of Rio Verde in narrow canyon cut in volcanic rhyolitic tuff. Plants in volcanic silts, coarse soils, mixed gravels and scattered large boulders of canyon bottomland. Large mature tree with estimated height exceeding 36', circumference greater than 8'. Scale provided by Dr. Richard Spellenberg, Professor Emeritus, Biological Sciences, New Mexico Sate University
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Galeana, Nuevo Leon, Mexico
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General Zaragoza, Nuevo Leon, Mexico
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in Big Bend National Park
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General Zaragoza, Nuevo Leon, Mexico
