111. POLYGONACEÆ. 355 
5. Rheum spiciforme, Royle, ZU. Himal. Pi. p- 318, t. 78; 
Meisn. in DC. Prodr. xiv. p. 86 ; Hook. f. Fl. Brit. Ind. v. p. 55. 
Kansuu (Przewalski!). Herb. Kew. 
Afghanistan and North India. 
6. Rheum uninerve, Maxim.? Hance in Journ. Bot. 1883, 
p. 355; Maxim. in Mél. Biol. x. p. 685. 
Kansun: Koko-nor (Mesny ex Hance!). Mus. Brit. 
The original plant is from Southern Mongolia. 
[Rheum Barbarum, Lour. (Fl. Cochinch. p. 255) 22 4. Rhabar- 
barum, Linn.— A. undulatum, Linn. (DC. Prodr. xiv. p. 33), a 
native of Western Siberia, has been erroneously, as it appears, 
recorded as Chinese. Rheum compactum, Linn., another Siberian 
species, was supposed by Linnæus to be Chinese. | 
1. Rumex Acetosa, Linn. Sp. Pl. ed. 1, p. 337; Meisn. in DC. 
Prodr. xiv. p. 63; Baker et S. Moore in Journ. Linn. Soc. xvii, 
p. 385; Franchet, Pl. David. p. 253, et in Mém. Noc. Sc. Nat. 
Cherbourg, xxiv. p. 248. 
SurvakiNa ; Chienshan (Joss!) ; Kranesu: Shanghai (Faber !); 
Formosa (Oldham, 437!) ; Hurren: Ichang and Patung district 
(A. Henry !); Lvcuv AmcuieEgLAGO (Wright!) Mus. Brit. ; 
Herb. Kew. 
Europe, North Asia, and North America, and naturalized else- 
where. 
2, Rumex Acetosella, Linn. Sp. Pl. ed. 1, p. 338: Meisn. in 
DC. Prodr. xiv. p. 64; Franch. et Savat. Enum. Pl. Jap. i. 
p. 893; Hook. f. Fl. Brit. Ind. v. p. 61. 
SHINGKING: between Moukden and Tungcheshien (James !). 
Herb. Kew. 
Europe, North Africa, and North Asia; and naturalized in 
many other countries. 
3. Rumex aquaticus, Zinn. Sp. Pl ed. |, p. 336 , Meisn. in 
DC. Prodr. xiv. p. 42; Boiss. Fl. Or. iv. p. 1008 ? 
Herren: Nanto, cult. (4. Henry!). Herb. Kew. 
Scandinavia and North of France to Russia and Siberia. 
The Chinese specimen is quite young, and may belong to 
R. domesticus, Hartm. It is cultivated for the sake of its root, 
which is used as a drug according to Dr. Henry. 
