Pine Family 5 



fruiting cones lateral, short oval, acutish, 15-25 cm. long, 10-15 

 cm. in diameter, deep chestnut-brown; scales produced into 

 prominent knobs awned with stout straight or slightly incurved 

 spines; seeds subcylindric, dark, 18-24 mm. long; wing about 

 half as long. 



Antelope Valley, ranging northward to the upper Sacramento. Confined 

 to the foothills. 



10. P. Coulter! Lamb. (COULTER'S PINE.) A middle-sized tree, 

 with thick rough bark ; leaves crowded at the ends of the thick 

 branches in clusters of 3, stiff and erect, 15-25 cm. long, dark 

 blue-green; staminate cones cylindric, 35-40 mm. long, with 

 8-10 involucral bracts; fruiting cones long-oval, pointed, 25-35 

 cm. long, 10-12 cm. thick, yellowish-brown, persistent; scales 

 with a stout elongated urnbo armed with thick incurved spines ; 

 seeds oval, black, 12-16 mm. long; wing 20-30 mm. long. 



Rather frequent in the coniferous forests of the San Bernardino, San 

 Jacinto and Cuyamaca Mountains, 4500-7000 feet altitude. Not yet reported 

 from the San Gabriel Mountains. 



11. P. attenuata Lemmon. (KNOB-CONE PINE.) A small tree 

 usually less than 10 m. high, somewhat irregularly branched; 

 bark light brown, roughish ; leaves in clusters of 3, 10-15 cm. 

 long, dark green; staminate cones, cylindric, 14-15 cm. long, with 

 6 involucral bracts ; fruiting cones clustered in verticils, persistent 

 for many years, light chestnut-brown becoming grayish, elon- 

 gated-conic, oblique at the base, 8-14 cm. long; scales armed 

 with stout prickles; seeds black, grooved, 6 rnm. long; wing 

 14-16 mm. long, widest near the middle. (P. tuberculata 

 Gordon.) 



Extending in a narrow belt along the southern slope of the San Bernar- 

 dino Mountains, 2500-4000 feet altitude. 



2. PSEUDOTSUGA Carr. FALSE SPRUCE. 



Evergreen trees with flat petioled leaves, appearing 

 2-ranked by a twist of the petiole, leaving an oval scar 

 on the smooth branches. Staminate cones oblong or cylin- 

 dric, partly enclosed by conspicuous orbicular bud-scales, 

 scales ending in a short spur ; anthers 2, obliquely split- 

 ting. Pistillate cones with the scales much shorter than 

 the broadly linear acutely 2-lobed and long-pointed 



