riNE FAMILY. 479 



able f(ir lumber, .sninoth, giveuish bark on yivuii;; trunks and branches; 

 pale or glaucous, slender leaves o'-4' long- ; and narrow cones 5'-()' long. 



P. excelsa. Wall. Bjiotan or Himalayan White P. Ornamental tree 

 barely hardy far N. ; wilh the drooping and glaucous-green, slender leaves 

 and the cones nearly twice the length of those of White Pine ; cone G'-IO' 

 long, with large, wedge-like, loosely imbricated scales. 



» * Nut Pines, with leaves, etc., as i)i flw preceding section, hut short, 

 thick cones of fewer and thick, poi)itless sculcn, and large, hard-shelled, 

 edible seeds destitute of a wing. 



P. Cembra, Linn. Cembka or Swiss Stone 1*. of the higher Alps; 

 small, slow-growing, very hardy, ornamental tree, with green, 4-sided 

 leaves o'-4' long and much crowded on the erect branches ; cones round- 

 oval, erect, 2' long ; the round seeds as large as peas. 



* * * Pitch Pines and their relatives, with leaves only 2 or C in the 

 cluster, scahj-shcathed at the base ; icood resinous. 



■i- Leaves 3 in the cluster. All natives, but the last Californian. 



*+ Cones terminal ; leaves long and slender. 



P. paldstris, Mill. Long-leaved or Southern Yellow Pink. Lofty, 

 striking tree of pine barrens from S. A'a., S. ; with leaves ]()'-1.5' long, 

 very resinous wood, and cones O'-IO' long ; the scales tipped with a re- 

 tiexed, short spine. 



•w- ++ Cones lateral and jiersistent on the branch long after shedding the 

 seed; the scales thickened at the end, often tijyped with a cusp or spine ; 

 leaves rigid. 



P. Tleda, Linn. Loblolly or Old-field P. Small tree, in light 

 soil, from Del., S., with less resinous wood than the last ; dark-green 

 leaves ()'-10' long ; and solitary cones o'-5' long ; the scales tipped with 

 a short, straight, or incurved spine. 



P. rfgida, Mill. Northern Pitch P. Sandy or thin, rocky soil, 

 abounding along the coast N. and in the upper country S.; a stout tree, 

 with dark-green leaves 3'-5' long from short sheaths ; clustered, ovate- 

 conical cones 2'-3' long ; the scales tipped with a recurved spine or prickle. 

 (Lessons, Figs. 411-413.) 



P. ser6tina, Michx. Pond P. " Small tree in wet gi-ound from N. Car., 

 S.; with valueless wood ; leaves 4'-8' long, and mostly opposite, round- 

 ovate cones 2'-3' long, their scales tipped with a very small and weak 

 prickle. 



P. ponderbsa, Dougl. Planted from Cal., where it is a characteristic 

 tree, with heavy wood, deep-green leaves 6'-ll' long, and clustered cones 

 about 3' long, reflexed on a short stalk. 



H- t- Leaves only 2 in the sheath (Lessons, Fig. 185), or a few of them 

 sometimes in threes, mostly differ. 



•*-<• Scales of the cone tipped loith a distinct beak or pnckle, often recurved. 



P. syhestris, Linn. SroTCii Pine (wrongly called also Scotch Fir). 

 The common Pine of N. Fu. ; midtUe-sized tree, known by the bluish- 

 white hue of its flat leaves (2'-4' long), reddi.sh bark on the trunk, and 

 narrow, tapering cones ; the scales with tubercle-like tips. Common in 

 cultivation. 



P. montana, Du T?oi. The dwarf Mugho Pink, or P. Mugho of nurs- 

 eries, is a native of S. Eu. ; usually a spreading shrub or bushy tree, 

 2^-10° high, with stiff leaves 2'-3' long, and smallish, tapering cones with 

 slight points to the scales. 



