2620 



PICEA 



PICEA 



Section II. CASICTA, Mayr. 



Lvs. quadrangular or more or less compressed: scales of 

 cone loosely oppressed before maturity, rhombic and 

 usually elongated, erose-denticulate, and more or 

 less wavy on the margin. 



11. Engelmannii, Engelm. (P. columbiana, Lemmon). 

 Abies commutata, Murr.). ENGELMANN SPRUCE. Tree, 

 to 150 ft., with slender spreading branches in closely 

 arranged whorls, forming a dense and narrow pyramid 

 in young trees: winter buds with brownish yellow 

 usually appressed or little spreading scales: young 

 branches pale brownish yellow, pubescent: Ivs. slender, 

 straight or slightly incurved, acute, bluish green to 

 steel-blue, %-l hi. long, without resin canals, of a 

 strong aromatic odor when bruised: fls. purple: cones 

 oval- to cylindric-oblong, light brown, 1^-3 in. long; 

 scales rhomboidal, narrowed and truncate or rarely 

 acute at the apex. From Alberta and Brit. Col. to 

 Ariz, and New Mex. S.S. 12:599. Gn.M. 2:26. F.E. 

 27:39. M.D.G. 1905:121, 122. A very ornamental 

 tree, varying in the color of foliage. Var. glauca, 

 Beissn., has bluish or steel-blue, and var. argentea, 

 Beissn., silvery gray foliage. M.D.G. 1906:557. P. 

 pseudopungens, Dieck, seems not to differ from typical 

 P. Engelmannii. The latter is said to be sold for P. 

 pungens. It is more common, and its seeds are there- 

 fore more readily secured. 



12. pungens, Engelm. (P. Parryana, Sarg. Abies 

 Menziesii, Engehn., not Lindl.). COLORADO SPRUCE. 

 Fig. 2943. Tree, 80-100, or occasionally to 150 ft., 

 with horizontal stout branches in rather remote whorls, 

 forming a broad, regular pyramid: winter buds with 

 brownish yellow usually reflexed scales: young branches 

 glabrous, bright yellowish brown: Ivs. rigid, incurved, 

 spiny -acuminate, bluish green to silvery white or 

 rarely dull green, %-lK in. long, with 2 resin canals: 

 cones cylindric-oblong, light brown and glossy, 234~4 

 in. long; scales rhomboidal, narrowed and erose at the 

 apex. Wyo. to Colo, and Utah. S.S. 12:600. G.C. 

 II. 20:725; III. 10:547. Mn. 7, p. 51. Gng. 7:49. 

 S.H. 2:273. F. 1884, p. 5. G.M. 



40:35. A very handsome and 

 very hardy tree of symmetrical 

 habit, with light, sometimes almost 

 silvery white foliage. According 

 to the different shades of color of 

 the foliage, the following varieties 

 are distinguished: Var. glauca, 

 Beissn. With bluish green Ivs. 

 Gn. 63, p. 280. G.M. 50: 121. Gn. 

 M. 2:26. G.W. 1, p. 355; 14, p. 

 14. R.B. 32, p. 106. Var. caeriilea, 

 Beissn. With bluish white foliage. 

 G.W. 1, p. 357. Var. argentea, 

 Beissn. With silvery white foli- 

 age. ' Gt. 53, p. 493. G.W. 2, p. 

 295; 8, p. 481; 10, p. 48. M.D.G. 1901:178. Var. K6s- 

 teri, Beissn. With silvery white foliage and of very regu- 

 lar pyramidal habit. G.W. 15, p. 467. F.E. 16: 461; 18: 

 82. Var. glauca pendula, Beissn. With bluish foliage and 

 pendulous branches. R.H. 1901, p. 183. F.E. 32:1173. 

 G.W. 6, p. 399; 9, p. 543; 16, p. 79. M.D.G. 1901:133. 

 Var. viridis, Regel (P. commutata, Hort.), is the form 

 with green Ivs. Var. compacta, Rehd. A dwarf com- 

 pact form; originated at the Arnold Arboretum. Var. 

 aurea, Niemetz. With golden yellow foliage. Var. 

 flavescens, Niemetz. With whitish yellow foliage. Var. 

 Mcerheimii, Rujis. Grows more compact and foliage 

 deeper blue. 



13. sitchensis, Carr. (Abies Menziesii, Lindl.). 

 TIDELAND SPRUCE. SITKA SPRUCE. Tree, usually 100 

 ft., occasionally 200 ft. high, with 'slender horizontal 

 branches, forming a broad pyramid in young trees; in 

 old trees the upper branches short and ascending, the 

 lower ones slender and spreading, clothed with slender 



2044. Picea cana- 



densis. Abnormal 

 spikes pistillate at 

 apex. 



branchlets: bark bright or dark red-brown: young 

 branches rigid, light brownish yellow, glabrous: Ivs. 

 bright green, shining and rounded on the lower side, 

 flat, slightly ridged and silvery white on the upper side, 

 sharply acute or acuminate, )^-l in. long: staminate 

 fls. red: cones cylindric-oval, pale yellowish or reddish 

 brown, 2^/2-4 in. long; scales rounded at the apex and 

 erose. Alaska to Calif. G.C. II. 25:728, 729. S.S. 

 12:602. G.F. 4:211 (erroneously named Douglas fir). 

 M.D.G. 1896:403; 1905:123. A very ornamental 

 tree, especially attractive by the contrasting colors of 

 the foliage, but it can hardly be grown successfully 

 in the eastern states ; it does not stand the hot summers 

 well, and is probably not hardy farther north than Mass. 

 Var. specie sa, Beissn., is of slower growth and more 

 compact habit, with more ascending branches and 

 shorter, more rigid Ivs. 



14. jezoensis, Maxim. (P. ajanensis, Fisch. Abies 

 jezoensis, Sieb. & Zucc. Abies Alcockidna, Veitch, 



Eartly). Tree, 100-150 ft., or occasionally higher, with 

 orizontally spreading slender branches: bark dark 

 gray: young branches glabrous, shining, yellowish brown 

 or yellowish green: If .-cushions slightly swollen, with 

 usually recurved petioles: Ivs. slightly curved, acute, 

 slender, slightly ridged on both sides, dark green and 

 shining below, silvery white above, 3^-%in. long: fls. 

 carmine: cones oblong, light brown, 1^-3H m - long; 

 scales oval-oblong, erose. E. Siberia, Amurland, 

 Saghalin, N. Japan. G.C. II. 13:115, 212; III. 3, p. 

 53. J.H.S. 26, p. 104. S.I.F. 2:3. Gt. 38, p. 217, figs. 

 2-5. Var. hondoensis, Rehd. (P. hondoensis, Mayr. P. 

 ajanensis var. microsperma, Beissn., not Mast.). Tree, 

 to 100 ft. : branchlets light reddish brown with much 

 swollen If .-cushions : Ivs. shorter, more obtuse, dull green 

 below. Cent. Japan. B.M. 6743. J.H.S. 26, p. 103, 

 R.H. 1903, p. 341, and G.W. 1:358 (as P. ajanensis). 

 S.I.F. 1:5. The type is rarely cult; it does not grow 

 well in the eastern states and suffers sometimes from 

 late frosts, owing to its early leafing. The variety is 

 much more satisfactory; it is not likely to suffer from 

 frost, as it ' leafs later, and is a highly ornamental 

 perfectly hardy tree. 



15. purpurea, Mast. Tree, to 60 ft. with wide-spread- 

 ing branches: branchlets orange-yellow, hispid: winter 

 buds broadly ovoid: Ivs. quadrangular, more or less 

 compressed, curved, obtuse or acutish, with 2 white 

 bands above, green beneath, sometimes with a few 

 stomata, J^-Kin- long: cones cylindric-oblong, 2-2 j/2 

 in. long, purple, even more or less so at maturity; scales 

 rhombic-oblong, contracted, narrowed from about the 

 middle, erose-denticulate, acutish or truncate at the 

 apex. W. China. Very handsome with its numerous 

 purple cones. 



Section III. OMORIKA, Mayr. 



Lvs. more or less compressed, with glaucous lines above, 

 green below: scales of cone closely appressed before 

 maturity, broad and entire or nearly so on the 

 margin. 



16. bicolor, Mayr (P. Alcockidna, Carr., partly. P. 

 Alcockidna nova, Hort. Abies bicolor, Maxim.). Tree, 

 80-150 ft., with rather stiff, spreading branches: bark 

 grayish brown: young branches dull yellowish brown, 

 glabrous, usually only leading shoots pubescent: Ivs. 

 somewhat curved, with 2 bluish lines above, dark 

 green beneath, sharply acuminate, /^>-/4in. long: 

 cones oblong, brown, purple before ripening, 3^4 in. 

 long; scales obovate, finely denticulate and slightly 

 wavy at the often recurved margin. Japan. G.C. II. 

 13, p. 213. C.L.A. 11:311. Gn.M. 2:24. R.H. 1903, 

 p. 340. S.I.F. 1:4. Handsome tree, with less slender 

 branches than P. jezoensis and of more rapid growth. 

 Var. acicularis, Shirasawa (P. aciculdris, Maxim. P. 

 japonica, Regel). Branchlets finely pubescent: Ivs. 

 curved, acute, bluish white above: cones light reddish 



