30 WILSON EXPEDITION TO CHINA 



Picea Balf ouriana Rehder & Wilson, n. sp. 



Arbor 15-40-inetralis, trunco 0.3-1 m. diam. procero, cortice 



cinereo, subtus pallide fulvo, profunde in lamellas crassas irregulares 



fisso; rami satis breves, horizontaliter patentes; ramuli dense villosi 



tomento ad tertium annum persistente, juniores flavidi v. pallide 



flavo-cinerei, vetustiores cinerei; pulvini leviter turgidi, oblongi, 



apice obtusi, petiolis plus minusve villosis circiter 1 mm. longis 



patentibus v. erecto-patentibus, cicatricibus transverse rhombicis v. 



fere triangularibus; gemmae late ovatae v. conicae, obtusae, leviter 



resinosae, perulis arete adpressis castaneis v. avellaneis nitidulis 



persistentibus. Folia spiraliter disposita, linearia, quadrangularia, 



compressa, recta v. leviter curvata, utrinque carinata, subacuta v. 



obtusa, rarissime pungentia, 8-15 mm. longa et 1.5 mm. lata, supra 



utrinsecus stomatum seriebus 4-7, dorso utrinsecus stomatum seriebus 



1-4. Strobili ovato- v. ovali-oblongi, violaceo-purpurei, squamis 



extus ad apicem brunnescentibus, 5-9, plerumque 6-8 cm. longi, 



decidui 6-8 menses post maturitatem, squamis infimis cum re- 



dunculo in ramo remanentibus; bracteae ovatae, acutae, circiter 2.5 



mm. longae; squamae flexiles striatae, erecto-patentes, rhombico- 



ovatae, 2-2.5 cm. longae et 1.3-1.5 cm. latae, infra medium latissimae, 



saepe infra apicem contractae et productae, supra medium erosae et 



plerumque plus minus laciniatae et imdulatae, basi late cuneatae v. 



subito contractae et interdum leviter auriculatae; semina alls obo- 



vatis circiter 1 cm. longis vix dimidiam squamam aequantibus 



nitidis brunneis purpureo-punctulatis, testa cinereo-brunnea minute 



puberula. 



Western Szech'uan; west of Tacbien-lu, Orangche, forests, 

 alt. 3600-4000 m., October 1910 (No. 4080, type); northeast of 

 Tachien4u, Ta-p'ao-shan, forests, alt. 3300-4000 m., July 1908 (No. 

 2055, 2059); west of Kuan Hsien, Pan-lan-shan, forests, alt. 3300- 

 3600 m., October 1910 (No. 4065). 



This new Spruce is one of the tallest of the Chinese species. The trunk is mast- 

 like with short, spreading branches giving a spire-like appearance to the tree. 

 The species is characterized by its thick, deeply furrowed bark, densely villose 

 shoots, compressed leaves obscurely stomatiferous on the dorsal surface, violet- 

 purple cones with membranous, flexible cone-scales rhombic-ovate in shape, 

 elongated in the upper half where they are undulate, laciniate or erose, and 

 ascending-spreading in the open cone. 



It is most closely related to P. purpurea Masters, which has a thicker and more 

 massive trunk, stouter more wide-spreading branches and becomes fiat-headed 

 in old individuals; it has more flattened, shorter and straight leaves, and much 

 smaller cones with scales often abruptly elongated above the middle and acute. 



