PINACEAE. — PICEA 31 



No. 2059 has abnormal looking cones probably due to having been frozen before 

 they were ripe. In No. 4065 the cones are rather small and the leaves longer 

 than usual and somewhat pungent. In general appearance this number suggests 

 P. purpurea Masters. 



Picea Balfouriana has a very extensive altitudinal range and west of Tachien-lu 

 Id the most alpine of all the species. The wood is resinous close-grained, easily 

 worked and the timber is highly valued for general construction purposes. 



Pictures of this tree will be found under No. 201 of the collection of Wilson's 

 photographs and also in his Vegetation of Western China, No, 346. 



This species is named for Mr. F. R. S. Balfour a lover and enthusiastic planter 

 of trees on his estate at Dawyck, Scotland, as a sHght return for his substantial 

 assistance to the Arboretum in its second Wilson Expedition to China. 



Picea likiangensis Pritzel in BoL Jahrb. XXIX. 217 (1900). 

 Mastersin Jour. linn. Soc.XXVI. 554 (1902); XXXVII .418 (1906). 

 Beissner, Handb, Nadelholzk. ed. 2, 249 (1909). — Patschke in Bot 

 Jahrh, XL VIII. 632, fig. 1, 6 (1913), 



Ahies likiangensis Franchet in Jour, de Bot. XIII. 257 (1899). 

 Picea Alcockiana Masters in Jour. Linn. Soc. XXXVII. 418 (non Carriere) 

 (1906). 



Western Szech'uan: west of Tachien-lu, Cheto-shan, wood- 

 lands and open country, alt. 3600-4000 m., July and October 1908 

 (Nos. 2o6i, 2063; tree 8-25 m. tall, girth 0.6-3 m.); same locality, 

 alt. 3300-4600 m,, June and October 1904 (Veitch Exped. No. 3028, 

 seed Nos. 1834, 1836). Yunnan: Likiang, alt. 2500., July 1884, 

 J. M. Delavay (No. 1031, type). 



This Spruce is a common species west of Tachien-lu and is usually a medium- 

 sized tree, from 15 to 20 m. tall. In favorable locahties it grows to 35 m. tall with 

 a rather slender mast-like trunk. The branches are long, relatively slender and 

 spreading with the ends of the shoots ascending. The species is characterized by 

 its pale yellow-grey sparsely hairy young shoots, prominently keeled, somewhat 

 compressed leaves, and by its cones with soft, flexible scales, somewhat undulate 

 and denticulate above the middle and horizontally spreading in the ripe cone. 



A picture of this tree will be found under No. 224 of the collection of Wilson's 

 photographs and also in his Vegetation oj Western China, No. 347. 



Picea likiangensis, var. rubescens Rehder & Wilson, n. var. 



A typo differt ramulis fulvescentibus v. rubescentibus foliis bre- 

 vioribus et crassioribus strobili squamis tenuioribus magis purpur- 

 ascentibus, paullo longioribus et angustioribus. 



Western Szech'uan: Tachien-lu and the neighborhood, forests 



June 



July 1908 (No. 2066). 



3300-4000 



