POLYGONACEAE. 
Determined by CAMILLO SCHNEIDER. 
POLYGONUM L. 
Polygonum multiflorum Thunberg, Fl. Jap. 169 (1784). — Meisner, 
Mon. Gen. Polygon. 64, t. 4, fig. Q (1826); in De Candolle, Prodr. 
XIV. 136 (1856). — Hemsley in Jour. Linn. Soc. XXVI. 342 (1891). — 
Dammer in Bot. Jahrb. XXIX. 314 (1900). — Schneider, Ill. Handb. 
Laubholzk. Y. 259, fig. 169 i-m (1904). 
Western Hupeh: Ichang, alt. 100-900 m., September and 
October 1907 (No. 437; climber 7-10 m. tall, flowers white); same 
locality, A. Henry (No. 2343); without precise locality, A. Henry 
(Nos. 82, 2488). Formosa: 1864, R. Oldham (No. 436). 
This species differs from the shrubby species of western Szech’uan, P. Aubertii 
L. Henry (in Rev. Hort. 1907, 82, fig. 23, 24), which was raised from seeds collected 
by Pére Aubert near Tachien-lu, in its much more branched inflorescence the axes of 
Which bear a very dense fine glandular pubescence at the edges, in the glabrous 
filaments, the smaller flowers and in the broader-winged fruits. P. Aubertii, of 
which I know only cultivated specimens, is more closely related to P. baldschuani- 
cum Regel (in Act. Hort. Petrop. VIII. 684, t. 10 [1883]), but in the last species the 
axes of the inflorescence are wholly glabrous, while in P. Aubertii there is a fine 
glandular pubescence somewhat like that of P. multiflorum but not so dense. 
The filaments of both the other species are finely pubescent toward their base 
and the wings of the larger fruits are narrower compared with their size. 
Here may be mentioned a Rumer not collected during the Arnold Arboretum 
Expeditions which is a very common woody plant in southern Szech'uan and 
northern Yunnan. 
Rumex hastatus D. Don, Prodr. Fl. Nepal. 74 (1825), fide Meisner in Wallich, 
Pl. As. Rar. III. 64 (1832); in De Candolle, Prodr. XIV. 72 (1856). — Hooker 
f., Fl. Brit. Ind. V. 60 (1886). — Collett, Fl. Siml. 428, fig. 136 (1902). 
Northern Yunnan: on the walls of the city of Hoching, September 25, 1914, 
C. Schneider (No. 2482; densely branched erect or procumbent shrub 0.3-0.8 m. 
tall); dry stony situations on the eastern flank of the Tali Range and on the walls 
x med city of Tali Fu, October 8, 1914, C. Schneider (No. 2880; fruits reddish, 
owy). 
This species is a common plant in the Yangtsze Valley of southern Szech'uan; 
I collected it in flower, in May 1914, between Yunnan Fu and Ningyüan Fu, where 
it seems to reach the northern limit of its range. 
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