/. Ledebouriana nov. f. 



Folia subtus pilis densis, brevissimis, subrufis omnino tecta. 



Distribution: The species occurs in Europe, except the extreme south, Novaya 

 Zemlya, south-western Asia to Turkestan, Pamir, the Himalayas, the Thian-Shan, Sibe- 

 ria, northwards to Taimyr (74° 15' north latitude), northern Mongolia, eastern Asia, 

 Sakhalin, Japan, North America. 



Fagopyrum tataricum (L.) Gaertn. De Fruct. et Sem. II (1791) p. 182; Ledeb. Fl. 

 Ross. Ill, p. 517; Turczan. Fl. Baical.-Dahur. (1852, IV) p. 449, no. 975; Herder, PL Radd. 

 (1892) p. 211, no. 68. Polygonum tataricum L. Spec. PL ed. II (1762) p. 521; Meisner, 

 Monogr. Gen. Polyg. p. 62, no. 28; Turczan. Cat. Baical. no. 968; Kptiji. $.i. Ajit. V 

 (1909) p. 1159. 



Common as weeds along road-sides, and the like, in the farming district between 

 Minusinsk and Kushabar. Flowering in June. 



Distribution: As weeds in Europe, Turkestan, central Asia, Siberia, eastern Asia, 

 North America (introduced). 



Fagopyrum esculentiim Moench, Method. PL (1794) p. 290; Ledeb. Fl. Ross. Ill, 

 p. 517; Herder, PL Radd. (1892) p. 210, no. 67. Polygonum Fagopyrum L. Spec. PL 

 ed. II (1762) p. 522; Meisner, Monogr. Gen. Polyg. p. 61; Meisner, Polyg. Haute-Asie p. 

 353 (20); EptM. $.1. Ajt. V (1909) p. 1159. 



Very commonly cultivated in the farming district between Minusinsk and Kusha- 

 bar, and dispersed as weeds into the fields, along road-sides, and the like. Flowering 

 in July. 



Distribution: This species, probably a native of Mongolia, has been introduced 

 into the temperate regions of the old and the new world, where cultivated, but occur- 

 ring as weeds as well. 



Atraphaxis frutescens (L.) Koch, Dendrol. II (1872) p. 360. Polygonum frutescens 

 L. Spec. PL ed. II (1762) p. 516. Atraphaxis lanceolata Meisner in DC. Prodrom. XIV 

 (1856) p. 78; Herder, PL Radd. (1892) p. 208, no. 65; KptM. $ji. Am. V (1909) p. 1156. 

 Tragopyrum lanceolattim Marsch.-Bieb., Ledeb. Fl. Alt II, p. 73; Karel. et Kiril. Enum. 

 PL Fl. Alt no. 793; Ledeb. Fl. Ross. Ill, p. 515; Turczan. Fl. Baical.-Dahur. (1852, IV) 

 p. 448, no. 974. 



Rather common on the dry Devonian slopes of sandstone on the Abakan Steppe, 

 near Askys, near Ust Sisti-kem, Ust Kamsara, Ust Tara-kem, and on the dry steppes 

 about the Ulu-kem, between Bjelosarsk and Cha-liul. The species flowers on the Abakan 

 Steppe in June. 



Distribution: South-eastern Russia and adjoining portions of Asia to Turkestan, 

 Siberia, eastwards to Trans Baikal and northern Mongolia. 



Rumex Acetosella L. Spec. PL ed. II (1762) p. 481; Ledeb. Fl. Alt H, p. 61; Tur- 

 czan. Cat. Baical. no. 989; Ledeb. Fl. Ross. Ill, p. 511; Turczan. Fl. Baical.-Dahur. 



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