V 1 y g oji a c e a e Jiss. 



Koenigia islandica L. Mant. I (1767) p. 35; Ledeb. Fl. Alt. I, p. 124; Turczan. Cat. 

 Baical. no. 992; Ledeb. Fl. Ross. Ill, p. 535; Turczan. Fl. Baical.-Dahur. (1852, IV) p. 

 462, no. 993; Herder, PI. Radd. (1892) p. 212, no. 69: Kpu.!. $.t. A.it. Y (1909) p. 1171. 



In moist, grass-grown places, near a mountain brooklet in the Altaian, at an alti- 

 tude of about 1900 m. above sea-level. Flowering at the end of July. 



Distribution: Arctic regions of Europe (Iceland, the Faroe Islands, Spitzbergen, Jan 

 Mayen, Beeren Eiland, Novaya Zemlya, Norway, northern Sweden, northern Russia), 

 northern Siberia (in the Yenisei valley, northwards past 70" north latitude), the Altai, 

 the Sayansk district, the Himalayas, North America, Greenland, Tierra del Fuego 

 (DiSEX, Skottsberg). 



Polygonum aviculare L. Spec. PI. ed. II (1762) p. 519; Lindman in Svensk Botan. 

 Tidsskrift YI (1912) p. 673: Ledeb. Fl. Alt. II, p. 85: Turczan. Cat. Baical. no. 977; Karel. 

 .■I Kiril. Enum. PI. Fl. Alt. no. 790; Ledeb. Fl. Ross. Ill, p. 531; Turczan. Fl. Baical.- 

 Dahur. (1852. lY) p. 461, no. 992; Herder, PI. Radd. (1892) p. 214, no. 72; Meisner, 

 Monogr. Gen. Pohjg. p. 87, no. 95: Ki)w.i. «I>.i. A.ix. \ (1909) p. 1169. 



Yery common in the territory explored, along road-sides, near habitations, in court- 

 yards, in moist places about the river Abakan. Minusinsk. Karatus, Kushabar, in farm- 

 yards, and the like, of settlements in the taiga, at Ust Algiac, Ust Sisti-kem, the Kamsara, 

 Tara-kem, Cha-kul and Ust Uss. The species varies considerably. The following forms 

 appear to be common from the structure of the vegetative shoots: « prociimbens Hayne, 

 Ledeb. 1. c, /J erectiim Ledeb. 1. c, and d vegeluni Ledeb. 1. c. However, as ripe fruits 

 are wanting in the specimens collected, an exact determination of this material is at 

 present hardly possible. 



Distribution: Nearly all over the globe. 



Polygonum dumetorum L. Spec. PI. ed. II (1762) p. 522; Ledeb. Fl. Alt. II, p. 82; 

 Turczan. Cat. Baical. no. 970; Ledeb. Fl. Ross. Ill, p. 528; Turczan. Fl. Baical.-Dahur. 

 (1852, lY) p. 457, no. 984; Meisner, Monogr. Gen. Polyg. p. 63, no. 32; Herder, PI. Badd. 

 (1892) p. 258, no. 92; KpLi.i. $.1. A.it. Y (1909) p. 1169. 



On slopes and in open woods of foliferous trees, near Kushabar. In full flower in 

 the middle of July. 



Distribution: Europe, south-western Asia to Turkestan. Afghanistan, the western 

 Himalayas, the Ea(st Indies, Siberia, eastern Asia, Sakahalin, North America (intro- 

 duced?). 



Polygonum Convolvulus L. Spec. PI. ed. II (1762) p. 522: Ledeb. Fl. All. II, p. 

 81; Turczan. Cat. Baical. no. 969; Karel. et Kiril. Enum. PI. Fl. Alt. no. 785; Ledeb. Fl. 

 Ross, m, p. 528; Turczan. Fl. Baical.-Dahur. (1852, lY) p. 456, no. 983; Meisner, Monogr. 

 Gen. Pohjg. p. 63, no. 30; Herder, PI. Radd. (1892) p. 255, no. 91; Meisner. Polgg. Haute- 

 Asie p. 349 (16); Kpi.i.i. «I).i. A.it. Y (1909) p. 1168. 



202 



