170 WILSON EXPEDITION TO CHINA 



165. Salix microstachya Turczaninow apud Trautvetter in Mem. Sav. tltr. Acad. 

 Sci. St. PStersbourg, III. 628, t. 4 (Salicetum) (1837); in Bull. Soc. Nat. Mosc. 

 XXVII. 377 (1854); Fl. Baical.-Dahur. 104 (1856). — Kegel in Act. Hort. Petrop. 

 VI. 466 (1880). — Wolf in Act. Hort. Petrop. XXIII. 156 (1903). 



Salix angustifoUa, /3 leiocarpa Ledebour, Fl. Ross. III. pt. 2, 604 (1850). 

 Salix angustifoUa, /3 microstachya Andersson in De CandoUe, Prodr. XVI. pt. 2, 



315 (1868). 

 f Salix cyanolimnea Hance in Jour. Bot. XX. 294 (1882). 

 / Salix Wilhelmsiana Franchet in Nouv. Arch. Mus. Paris, s^r. 2, VII. 93 (PL 



David. I. 283) (non Marshall von Bieberstein) (1884). 

 Salix Wilhelmsiana, P microstachya Herder in Act. Hort. Petrop. XI. 456 (1891). 



The type was collected by Turczaninow in western Siberia on the Irkut River, 

 and according to Hance's description I have little doubt that the following specimen 

 belongs to the same species: 



TIBET. Kukunor: "ad lacum Ko-ko-nor," 1881, W. Mesny (Herb. Hance 

 No. 22009; ex Hance). 



MONGOLIA: Ordos " dans les plaines humides," June, A. David (No. 2719; 

 with fruits, ex Franchet); " Ou la chan, bords des ruisseaux des montagnes," A. 

 David (No. 2676; ex Franchet). 



David's specimens may belong to *S. cheilophila Schneider (see p. 69), which is 

 very similar, although it may be distinguished by its mostly two-colored bracts and 

 minute stigmas. 



166. Salix Bockii Seemen. See p. 71. 



167. Salix Duclouxii L^veill6 in Bull. Soc. Bot. France, LVI. 298 (1909). 

 CHINA. Yunnan : Yunnan Fu, valleys, July 23, 1905, F. Ducloux (No. 670; 



cf and 9 types). 



Through the kindness of Mgr. L6veill6 I have received cf and 9 catkins and a 

 leaf of his type. The flowers appear in sunamer hke those of S. Bockii Seemen, and 

 I suppose both species are very closely related. The cf have the same long gland 

 as the 9 flowers, the bracts are acute and somewhat hke those of S. variegata Fran- 

 chet. It needs more material in order to decide whether our plant is a good species 

 or only a form of S. Bockii. 



168. Salix variegata Franchet. See p. 70. 



169. Salix andropogon L6veill4 in Fedde, Rep. Spec. Nov. III. 21 (1906); in 

 Bull. Soc. Bot. France, LVI. 297 (1909); Fl. Kouy-Tcheou, 381 (1915). 



CHINA. Kweichau: " Lit du fleuve, submerge aux grandes eaux," Decem- 

 ber 15, 1904, /. Esquirol (No. 327; cf and 9 types). 



Mgr. L6veill6 has kindly sent to the Arnold Arboretum a cT and a 9 catkin of 

 this Willow. The species is very closely related to S. variegata Franchet, and I 

 cannot distinguish the 9 flowers from those of that species. The pubescence of the 

 catkins is sometimes somewhat yellowish, but I would not say: " rhachi fulvo- 

 villoso," as L6veill6 does. The d' catkins differ in several respects. The young 

 anthers bear some hairs at the end of each connective, something I have never seen 

 in any other species of Salix. These hairs seem to fall off from the older anthers 

 toward the base of the catkin. The filaments are pubescent at the base, while in 

 S. variegata Franchet I have found them always glabrous, but von Seemen describes 

 the base of the filaments of the type of his S. densifoliata as "dicht weissgrau 

 behaart," a character which is variable in several species. The bracts of S. ando- 

 pogon are villose and ciliate. L6veille's indication " squama . . . albide villosa, 

 ebarbata " seems to be a misprint for " et barbata." I have seen only very young 

 small leaves which are nearly glabrous, the very short petioles being tomentose. 



