32 WILSON EXPEDITION TO CHINA 



P. K. Subramaina Jyer (No. 86); Bhotan, without locality, W. Griffith (Nos. 957, 

 2559, ex Haines). 



This species may represent a distinct group of sect. Tacamahaca according to its 

 rather long stalked fruits, its densely ciliate leaves, its long anthers, etc. Dode 

 refers it to his "groupe Ciliata" together with P. J acquemontiana Dode (in Mem. 

 Soc. Hist. Nat. Autun, XVIII. [Extr. Monog. Ined. Populus, 66, t. 12, fig. 108] [1905]) 

 from the same geographical region without referring to any specimens. The only 

 difference I can detect in his description is in the pubescent fruit. Having seen 

 no specimen I cannot judge from Dode's insufficient indications if his species is 

 distinct or only a variety of P. ciliata. 



7. Populus suaveolens Fischer. See p. 18. 



Populus suaveolens, var. Przewalskii Schneider, n. var. 

 Populus suaveolens, var. a Maximowicz in Bull. Soc. Nat. Mosc. LIV. 51 



(1879) quoad specim. Piasezki. 

 Populus Przewalskii Maximowicz in Bull. Acad. Sci. St. Petersbourg, XXVII. 



540 (1882); in Mel. Biol. XI. 321 (1881). — Dode in Man. Soc. Hist. Nat. 



Autun, XVIII. (Extr. Monog. Ined. Populus, 55) (1905), exclud. synon.! — 



Gombocz in Math. Termesz. Kdzl. XXX. 101 {Monog. Gen. Populi) (1908). 

 Populus Przewalskii, f. microphylla Gombocz, 1. c. (1908). 



TIBET. Kukunor: " ad Hoangho superiorem ejusque affluentea nee non ad 

 lacum Kukunor," 1872 and 1880, N. M. Przewalski (type of P. Przewalskii, ex 

 Maximowicz). 



CHINA. Kansu: "inter fl. Hoangho et murum magnum, in Liang-tshouc 

 et Shan-dan-siang viis publicis, in arenosis Han-tschou," July, August 1875, P. J. 

 Piasezki (co-type of P. Przewalskii, ex Maximowicz). 



MONGOLIA: " circa lacus Ubsa," 1879, G. N. Potanin (with not quite ripe 

 fruits). 



According to Maximowicz his P. Przewalskii is distinguished by " capsulis 

 parvis subsessiUbus ovoideis obtusis pubescenti-pilosis maturis glabratis, stig- 

 matibus 3." I have not seen a type specimen, but by the kindness of the Keeper 

 of the Kew Herbarium I have been able to examine Potanin's specimen mentioned 

 above. It agrees well with Maximowicz's description. The leaves are ovate- 

 oblong and somewhat acvmiinate at the apex and orbicular-cuneate at the base, 

 both surfaces being more or less sparsely and finely puberulent; the petioles are 

 loosely villose. The perianth and the ovaries of the male flowers are more or less 

 pubescent; but further observations are needed to determine if the pubescence of 

 the floral parts of Populus is a good character or not. The shape, the texture, and 

 the pubescence of P. suaveolens Fischer seem to be very variable. See also p. 20; 

 some of the sterile specimens here mentioned may belong to var. Przewalskii. 



8. Populus Maximowiczii A. Henry in Gard. Chron. ser. 3, LIII. 198, fig. 89 (1913) ;. 

 in Elwes & Henry, Trees Gr. Brit. & Irel. VII. 1838, t. 410, fig. 24 (1913). 



Populus suaveolens, var. latifolia Regel in Mem. Acad. Sci. St. Petersbourg, 



ser. 7, IV. 133 {Tent. Fl.Ussur.) (1862). — Gombocz in Math. Termesz. 



Kdzl. XXX. 112 {Monog. Gen. Populi) (1908). 

 Populus suaveolens Maximowicz in Bull. Soc. Nat. Mosc. LIV. 52 (formae sub 



b et c indicatae) (non Fischer) (1879). — Sargent in Gard. & Forest, VI. 



404 (1893); Forest Fl. Jap. 71 (1894). — Komarov in Act. Hort. Petrop. 



XXII. 17 {Fl. Mansh. II.) (pro parte maxima) (1904). — Dode in Mem. 



Soc. Hist. Nat. Autun, XVIII. {Extr. Monog. Ined. Populus, 61) (pro 



parte) (1905). — Nakai in Jour. Coll. Sci. Tokyo, XXXI. 211 {Fl. Kor. 



II.) (1911). 



