Rather common as a weed along roads and on margins of corn-fields, between 

 Minusinsk and Kushabar, as well as on the banks of the Bei-kem, near Sebi. With 

 flowers in July. 



Distribution: Europe, except the arctic regions, the Caucasus, south-western Asia 

 to Turkestan, Afghanistan, the Himalayas, India, Siberia (in the Yenisei valley north- 

 wards to about 61}^° north latitude), eastwards to Trans Baikal and the Sea of Okhotsk, 

 Sakhalin, Japan, North Africa, North America (introduced). 



Polygonum undulatum Murray, Comment. Goett. V (1774) p. 34. Polygonum alpiniim 

 Alhoni, Fl. Pedemont. II (1785) p. 206; Eptiji. «I>jt. Ajit. V (1909) p. 1167. Polygonum 

 polymorphum Ledeb. Fl. Ross. Ill, p. 524 ex parte; Herder, PI. Radd. (1892) p. 263, 

 no. 98; Meisner, Monogr. Gen. Polyg. p. 56, no. 14; Meisner, Polyg. Haute-Asie p. 

 351 (18). 



subspec. alpinum (Allioni) Beck in Reichenb. Icon. XXIV (1906) p. 86. Polygonum 

 alpinum Allioni, Ledeb. Fl. Alt. II, p. 79 pro parte; Turczan. Cat. Baical. no. 972. 

 Polygonum polymorphum y alpinum Ledeb. Fl. Ross. Ill, p. 524. Polygonum alpinum 

 a vulgare Turczan. Fl. Baical.-Dahur. (1852, IV) p. 452, no. 978. 



Very common in somewhat moist meadows on the islets in the river Abakan, 

 where collected by me with young flowers in the second half of June. Also common 

 in the Urjankai country, in meadows, and here and there in quite dry places, in open 

 woods of conifers or foliferous trees, where, in places, occurring abundantly, Ust Algiac, 

 Ust Sisti-kem; very common between the Kamsara and the Tara-kem, in woods of 

 spruce, larch and birch intermingled, where found by me, past flowering and nearly 

 withered, in the second half of August. 



subspec. ciliatum (Willd.) Aschers. et Graebn. Synops. Mitteleur. Fl. IV (1913) p. 

 842. Polygonum polymorphum d undulatum Ledeb. Fl. Ross. Ill, p. 525; Turczan. Fl. 

 Baical.-Dahur. (1852, IV) p. 453, no. 978. Polygonum alpinum Ledeb. Fl. Alt. II, p. 79 

 pro. parte. 



Apparently occurring much more rarely than the preceding one. In my collection 

 is one specimen of it, taken near Ust Abakansk, towards the end of June. 



Distribution: Southern Europe, from the Alps southwards, the Caucasus, Asia 

 Minor, Trans Caucasia, Turkestan, Afghanistan, the Himalayas, Siberia, northwards to 

 about 71° north latitude, and eastwards to Trans Baikal, northern Mongolia, North 

 America. 



Polygonum minus Huds. Fl. Angl. I (1762) p. 148; Ledeb. Fl. Alt. II, p. 83; Karel. 

 et Kiril. Enum. PI. Fl. Alt. no. 788; Ledeb. Fl. Ross. Ill, p. 523; Turczan. Fl. Baical.- 

 Dahur. (1852, IV) p. 459, no. 988; Meisner, Polyg. Haute-Asie p. 344 (11); Herder, PI. 

 Radd. (1892) p. 226, no. 79; KpMJi. $ji. Ajit. V (1909) p. 1166. 



On islets in the Yenisei, in moist, sandy and muddy places, near the banks of the 

 river. With young flower-buds at the end of June. 



203 



