PINACE^ 



87 



Platte and Arkansas rivers in Colorado; western Oklahoma (near Kenton, Cimarron 

 County, common) and western Texas; on the Colorado plateau, northern Arizona; over the 

 mountain ranges of southwestern Wyoming, Nevada, southern New Mexico and Arizona, 

 and southward into northern Mexico; often covering, with the Nut Pine, in southern 

 Colorado and Utah, and in northern and central New Mexico and Arizona, great 

 areas of rolling hills 6000-7000 above the sea-level; reaching its largest size in northern 

 Arizona. 



9. Juniperus mexicana Spreng. Cedar. Rock Cedar. 



Juniperus sabinoides Nees. 



Leaves usually opposite or ternate, thickened and keeled on the back, obtuse or acute 

 at apex, mostly without glands, denticulately fringed, rather more than iV long, dark 

 blue-green, on vigorous young shoots and seedling plants lanceolate, long-pointed, rigid, 





Fig. 86 



'-f ' long. Flowers: male with 12-18 stamens, their connectives ovoid, obtuse, or slightly 

 cuspidate: scales of the female flower ovate, acute, and spreading, very conspicuous when 

 the fruit is half grown, becoming obliterated at its maturity. Fruit short-oblong to subglo- 

 bose, j'~j' in diameter, dark blue, with a thin skin covered with a glaucous bloom, sweet 

 resinous flesh, and 1 or 2 seeds; seeds ovoid, acute, slightly ridged, rarely tuberculate, dark 

 chestnut-brown, with a small hilum, a thin outer seed-coat, a membranaceous dark brown 

 inner coat, and 2 cotyledons. 



A tree, occasionally 100 but generally not more than 20-30 high, with a short or elon- 

 gated slightly lobed trunk seldom exceeding a foot in diameter, small spreading branches 

 forming a wide round-topped open and irregular or a narrow pyramidal head, slender 

 sharply 4-angled branchlets becoming terete after the falling of the leaves, light reddish 

 brown or ashy gray, with smooth or slightly scaly bark; often a shrub, with numerous 

 spreading stems. Bark on old trees j'-|' thick, brown tinged with red, and divided into 

 long narrow slightly attached scales persistent for many years and clothing the trunk with 

 a loose thatch-like covering. Wood light, hard, not strong, slightly fragrant, brown 

 streaked with red; largely used for fencing, fuel, telegraph-poles, and railway-ties. 



Distribution. From Brazos County over the low limestone hills of western and south- 

 ern Texas, and southward into Mexico; forming great thickets and growing to its largest 

 size on the San Bernardo River; much smaller farther westward, and usually shrubby at the 

 limits of vegetation on the high mountains of central Mexico. 



