90 



TREES OF NORTH AMERICA 



;V\ T'^ 79 



Distribution. In the United States only on the slopes of the Chisos Mountains 

 in southwestern Texas; common in northeastern Mexico, growing at elevations of 

 6000-8000 on the hills east of the Mexican table-lands. 



Occasionally cultivated in the gardens of southern France and Algeria. 



5. Juniperus pachyphlaea, Torr. Juniper. Checkered-bark Juniper. 



Leaves in pairs, appressed, rounded and apiculate at the apex, thickened, obscurely 

 keeled and glandular on the back, bluish green, rather less than 1' long; on vigorous 

 shoots and young branchlets linear-lanceolate, tipped with slender elongated points, 

 and pale blue-green like the young branchlets. Flowers opening in February and 

 March, the staminate stout, ^ long, with 10 or 12 stamens, their connectives broadly 

 ovate, obscurely keeled on the back, short-pointed; scales of the pistillate flower 

 ovate, acuminate, and spreading. Fruit ripening in the autumn of the second 

 season, globose or oblong, irregularly tuberculate, about ^' long, usually marked 



pic, SO 



with the short tips of the flower-scales, occasionally opening and discharging the 

 seeds at the apex, dark red-browm, more or less covered with a glaucous bloom, 

 especially during the first season and then occasionally bluish in color, with a thin 

 .epidermis closely investing the thick dry mealy flesh, and usually 4 seeds; seeds 

 acute, conspicuously ridged and gibbous on the back, with a thick shell, a pale inner 

 seed-coat, and 2 cotyledons. 



