792 PINACE^ PINC8 



2-4 feet in diameter with dark brown to nearly black bark and rather 

 sparsely branched with spreading or drooping usually crooked branches : 

 leaves 4-10 inches long: staminate aments l-lJi inch long, the stamens 

 with a large semicircular eresf': cones 5-12 inches long, dark brown-, pend- 

 ent, on peduncles-i'S inches long apophyses rather thin, with a prominent 

 umbo and stout triangular recurved prjckle 5-6 lines long : cotyledons 7-11 . 

 On dry stony ridges southern Oregon. 



P. attennata ^mmon Mining and Scientific Press, Jan. 16th, 1891. 

 A small tree 10-40 feet high and 3-18 inches in diameter with rough dark- 

 colored bark and short, ascending branches : leaves in threes, with th,in 

 close sheaths, slender, acute, with callous tips coarsely and remotely 

 serrate firm and rigid, pale yellow or bluish-green, 3-7 inches long: stami- 

 nate flowers in elongated spkies, cylindrical, 6 lines long : antTrera terminat- 

 ing in irregular toothed broad crests, surrounded by 9 bracts : cones elon- 

 gated-conical, pointed, very oblique at base, strongly reflexed, 3-6 inches 

 long, lJ^-2 inches thick, remaining closed for many years^r sjcales flat, 

 rounded at the apex, those of the outside being enlarged into promiment 

 knobs arned with thick flattened incurved spines. On dry mountain 

 sides southern Oregon to California. 



-•- ■*- Leaves in twos. 



P. contorta Loudon Arb. Brit, iv, 2292. A small tree 10-30 feet high 

 with a short ti'unk 6-12 inches in diameter: leaves 1-1 J^ inches long, acute, 

 with short callous tips, finely and sharply serrulate: staminate aments cy- 

 lindrical, about 6 lines long, with orange-red anthers teiminating in semi- 

 orbicular nearly entire crests, surrounded^ 6 scales: cones oval or sub- 

 cylindrical 1-3 inches long, tapering toward the apex, very oblique at the 

 base: scales thin, rounded at the apex which is transversely keeled and 

 slightly thickened into narrow oblong dark umbos, armed with slender 

 often recurved prickles, often remaining closed several years. Common 

 on the coast and on the mountains California to Alaska and the Bocky 

 Mountains. 



P. Knrrayana Oregon Com. A small slender tree 50-120 feet high 

 and 4-12 inches in diameter, with veiy thin light grayishvbrown bai'k and 

 Spreading or ascending branches : leaves 1-3 inches long, light green, delicately 

 seiTulate: staminate aments cylindrical, surrounded by 6-8 scales: cones oblong- 

 cylindrical, 1-2 inches long, slightly oblique at base, tapering toward the apex 

 often opening at maturity and deciduous: seeds black, the wings 6-8 lines long. 

 On the high mountains California to Brit. Columbia and the Rocky Mountains 

 east of the Casacde Range. 



