SALICACEAE. — POPULUS 19 



Populus suaveolens, var. macrocarpa Schrenk^ in Fischer & Meyer, Enum. PI. 



Nov. Schrenk. 11. 16 (1842). 

 Populus suaveolens, var. angustifolia Kegel in Mem. Acad. Sci. St. Petershourg, 



ser. 7, IV. 132 (.Tent. Fl. Ussur.) (1862). — Gombocz in Math. Termesz. 



Kozl. XXX. Ill (1908). 



Western Szech'uan: Min River valley, Sungpan to Mao-chow, 

 common, alt. 2000-3000 m., August 27, 1910 (No. 4577; tree 24-32 

 m. tall, girth 1.25-3 m., sterile branches with elliptical acuminate 

 leaves with acute base) ; Monkong Ting, common in dry valleys, alt. 

 2300-3000 m., June 28, 1908 (No. 2162, tree 7-32 m. tall, girth 0.75- 

 3 m.; fruiting branches, inflorescences to 15 cm. long, leaves rather 

 ovate and shortly acuminate) ; near Mon-kong Ting, ascent of Hsiao 

 Chin Ho, alt. 2300-2600 m., June 29, 1908 (No. 2164; tree 12-24 m. 

 tall, girth 1.5-2.5 m.; fruiting branches similar to No. 2162, but leaves 

 more elliptic-ovate, base a little cordate-lobate) ; Ching-chi Hsien, Fu- 

 yueh-ling, alt. 2300-3000 m., May 1908 (No. 1432; tree 10 m. tall, 

 girth 1.25 m.; fruiting branches, leaves mostly broad-ovate, acumi- 

 nate, base slightly cordate, to 10.5 cm. long and 7 cm. broad) ; same 

 locality, October 1908 (No. 143 1; bark from young and old tree); 

 Tachien-lu, planted around temples, July 1903 (Veitch Exped. No. 

 4539, tree 24-32 m. tall; fruits and young twig, leaves broad-ovate or 

 broad-elliptical, base ovate or slightly acute, twigs somewhat angu- 

 late). Kansu: "intra prov. Kansu, inter fl. Hoangho et murum 

 magnum, in Liang-tschou et Shan-dan-siang viis publicis, in arenosis 

 Han-tschou," July, August 1875, P. J. Piasezki (ex Maximowicz) 

 Chili : Hsiao Wu-tai-shan, alt. 1800 m., August 23 and 28, 1913, F. N. 

 Meyer (No. 1311); Jehol, 1910, W. Purdom (No. 2). 



TIBET. "Ad Hoangho superiorem ejusque affluentes nee non ad lacum 

 Kukunor," 1872 and 1880, A''. M. Przewalski (type, ex Maximowicz). 



NORTHEASTERN ASIA. Transbaikalia: "Dahuria," Fritsch; south- 

 ern Mongolia: "Mont Muniula," 1872, N. M. Przewalski (flowering and ster- 

 ile branches, old female flowers glabrous, seems to be mixed with young female 

 Qovfers oi Populus tremula,va.T. Davidiana; inherb.Kew). Mandshuria: Harbin, 

 August 16, 1903, C. S. Sargent (tree with pale bark, deeply furrowed near its 

 base). Korea : Ping-yang, September 18, 1905, J. G. Jack (in the shape of the 

 leaves this specimen agrees with typical P. suaveolens, but in texture and color 

 they are more like those of P. Maximomiczii. 



SONGARIA: "an den Quellen des Aksu," July 19, 1840, A. Schrenk (sterile). 

 Alatau, August 27, 1843, A. Schrenk (No. 118). 



TURKESTAN: "ad flumen Sairam," July 19, 1878, Fetissow. 



* In the pubescence of the branchlets, petioles and leaves this form resembles 

 P. Maximowiczii Henry, but in the shape and texture of the leaves it agrees with 

 P. suaveolens; and 1 am not quite sure to what species it really belongs. 



