280 THE CULTIVATED EVERGREENS 



14. P. Koyamai, Shiras. (P. Moramomi, Hort.). Narrow pyramidal tree 

 to 60 feet tall; bark grayish-brown, scaly, peeling off in thin flakes; branchlets 

 reddish-brown and slightly bloomy, the lateral ones glandular-pubescent, 

 the leading shoots nearly glabrous; winter-buds conical, brown, resinous; 

 leaves quadrangular, slightly compressed, straight or curved, acute or obtuse, 

 ]/i-}4 inch long, the white bands above each with 5-8 rows of stomata, those 

 beneath with 2-4 rows each and inconspicuous: cones cylindric-oblong, 2-4 

 inches long, pale brown, pale green before maturity: scales broad, rounded, 

 denticulate, very firm. Japan. — Introduced in 1914 by E. H. Wilson to the 

 Arnold Arboretum where it has proved hardy. 



15. P. bicolor, Mayr (P. Alcockiana, Carr., partly. P. AlcocJciana nova, 

 Hort. Abies bicolor, Maxim.). Alcock S. Plate XXXV. Pyramidal tree 

 80-150 feet tall, with rather stiff, spreading or ascending branches; bark 

 grayish-brown, fissured into thin plates; young branches dull yellowish- 

 brown, glabrous, usually only leading shoots pubescent; winter-buds conic- 

 ovoid, brown, slightly resinous: leaves quadrangular, slightly compressed 

 from above, somewhat curved, with 2 bluish-white bands above, dark green 

 beneath and with only 2-4 rows of stomata on each side, sharply acuminate, 

 3/^-^ inch long: cones oblong, brown, purple before ripening, 3-4 inches 

 long; scales obovate, finely denticulate and slightly wavy at the often 

 recurved margin. Japan. — Introduced in 1861 and again in 1868 to Europe. 

 Hardy as far north as southern Ontario and New England. A handsome tree 

 growing well in the eastern States. 



16. P. Glehnii, Mast. Saghalin S. Tree to 120 feet tall, of narrow- 

 pyramidal habit with slender, short and spreading branches; bark red-brown, 

 fissured into thin flakes; branchlets reddish-brown, densely short-pubescent; 

 winter-buds conic-ovoid, chestnut-brown, resinous, the terminal bud at base 

 with subulate scales: leaves quadrangular, slightly compressed, obtuSe or on 

 young plants pointed, M~H inch long, deep green, with 2 rows of stomata on 

 each side above and with 1 row on each side beneath: cones cylindric-oblong, 

 2-3 inches long, lustrous brown, violet before maturity; scales suborbicular, 

 rounded or slightly produced in the middle, entire or slightly erose. Japan 

 and Saghalin. — Introduced before 1891 to Europe and in 1894 to the Arnold 



Arboretum where it is 

 perfectly hardy and has 

 grown into handsome 

 narrow- pyramidal 

 trees. Probably hardy 

 as far north as Canada. 

 17. P. rubra, Link, 



73. Picea rubra. 'W ^E'^^^ ^^^ A" ^^^^^- ^^^ 



australis. Small. P. 



