90 



TREES OF NORTH AMERICA 



F". 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 ^' 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 



TIC, SCO 



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

 seeds at the apex, dark red-brown, 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. 



