lll. POLYGONACEE. 339 
19. Polygonum divaricatum, Lina. Sp. Pl. ed. 1, p. 363; 
Meisn. in DO. Prodr. xiv. p. 140; Ledeb. Fl. Ross. iii. p. 526; 
Franchet, Pl. David. p. 257. 
Curr: Jehol (David ex Franchet). 
Western Siberia to Mandshuria. 
20. Polygonum Dumetorum, Linn. Sp. Pl. ed. 2, p. 522 
Ledeb. Fl. Ross. iii. p. 528; Hook. f. Fl. Brit. Ind. v. p. 54; 
Franchet in Mém. Soc. Sc. Nat. Cherbourg, xxiv. p. 219. 
SuaNTUNG: Chefoo (Fauvel ex Fanchet). 
Western Europe to North-west India and Siberia. 
2]. Polygonum Fagopyrum, Linn. Sp. Pl. ed. 1, p. 364; 
Baker et S. Moore in Journ. Linn. Soc. xvii. p. 385; DC. Orig. 
Pl. Cult. ed. 3, p. 279. 
Fagopyrum esculentum, Mench. Method. Pl. p. 290; Meisn. in DC. 
Prodr. xiv. p. 143; Hook. f. Fl. Brit. Ind. v. p. 55; Debeaux, Fl. Tients. 
p. 38, et Fl. Tchef. p. 123; Franch. et Savat. Enum. Pl. Jap. i. p. 403; 
Franchet, Pl. David. p. 257, et in Mém. Soc. Sc. Nat. Cherbourg, xxiv. 
p. 250. l 
Polygonum emarginatum, Roth, Catal. Bot. i. p. 48; Bot. Reg. 
t. 1065. 
Fagopyrum emarginatum, Meisn. in DC. Prodr. xiv. p. 143. 
CHIHLI, Kansun, and SHINGKING to Hupku, SZECHUEN, CHE- 
KIANG, and Kwanetune; cultivated and colonized (Fortune! 
Oldham! Bretschneider! Bushell! Bourne! Ross! and others). 
Mus. Brit.; Herb. Kew. 
Siberia and Mandshuria, and naturalized in many other 
countries. 
22. Polygonum flaccidum, Meisn. in DC. Prodr. xiv. pro parte, 
et excl. synon., non Foxb., ex Hook. f. Fl. Brit. Ind. v. p. 39; 
Hance in Aun. Sc. Nat. 5" série, v. p. 237 (var. ripularum). 
Kwanatune (Sampson, hb. Hance, 7563!). Mus. Brit.; Herb. 
Kew. mE 
This species, as limited in the ‘Flora of British India,’ is 
common throughout India, Ceylon, and Malaya. See note under 
P. Posumbu, Hamilt. 
23. Polygonum Forbesii, Hance in Journ. Bot. 1883, p. 100. 
SuaxTUNG: Chefoo, at the temple of the bamboos (Forbes & 
Carles!). Mus. Brit.; Herb. Kew. l 
We find no character to separate this from the variable 
