Ledeb. Fl. Alt. II, p. 250; Turczan. Fl. Baical.-Dahur. (1843) p. 627, no. 423. Polenlilla 

 Comarum Nestl., Turczan. Cat. Baical. no. 430. 



Of rather common occurrence in the traversed regions of southern Siberia and the 

 Urjankai country, in swampy meadows, on the borders of lakes and swamps, and on the 

 banks of slow rivers. On the rivers Abakan and Yenisei, at Kushabar, Ust Algiac, Ust 

 Sisti-kem, the Kamsara, the Tara-kem, and in the bogs on the Dora Steppe. In the speci- 

 mens collected the petals are comparatively smaller and narrower than usual in Scandi- 

 navian ones; they are also broadest almost at the base and gradually tapering and pro- 

 longed into a point upwards. The downy stems are rather densely glandulovis above. 



Distribution: Northern and middle Europe, Caucasia, Trans Caucasia, Armenia, 

 Siberia, northern Mongolia, Sakhalin, Japan, North America, Greenland. 



Potentilla fruticosa L. Spec. PL ed. II (1762) p. 709; Wolf, Monogr. Gatt. Polenlilla 

 in Biblioth. Botanica H. 71 (1908) p. 55; Ledeb. Fl. Alt. II, p. 234; Turczan. Cat. Baical. no. 

 418; Karel. et Kiril. Enum. PI. Fl. Alt. no. 297; Ledeb. Fl. Boss. II, p. 61; Turczan. Fl. Bai- 

 cal.-Dahur. (1843) p. 625, no. 421; Kptiji. ^ji. A.it. II (1903) p. 370. 



Very common along the banks of the river Amyl, on cliffs and in stony places 

 which are sometimes inundated. Very common in the Urjankai country, for instance 

 at Ust Algiac and Tshernoretska, in grass-grown places at Ust Tara-kem and on the Ulu- 

 kem, near Bjelosarsk, where it usually does not attain a greater height than K — 1 m. The 

 species flowers here in July. There seemed to occur all intermediates between var. vul- 

 garis WiLLD. (Herb, ex Schlechtd. in Mag. Ges. Naturf. Fr. Berlin VII (1816) p. 285) and 

 the following variety. 



var. tenuifoliaLehm. Revis. Potent. (1856) p. 17; Wolf, 1. c. p. 58. 



Rather typically developed specimens have been collected by me on the river Aba- 

 kan, near Uibat. 



Distribution: The British Isles, southern Sweden, Bussia, Siberia, northwards to 

 67° 25' north lat, northern Mongolia, south-western and central Asia, eastern Asia, Sak- 

 halin, Japan, North America. 



Potentilla bifurca L. Spec. PI. ed. II (1762) p. 711; Wolf, Monogr. Gatt. Polenlilla 

 p. 62; Ledeb. Fl. Alt. II, p. 245; Turczan. Cat. Baical. no. 419; Karel. et Kiril. Enum. PI. Fl. 

 Alt. no. 303; Ledeb. Fl. Boss. II, p. 43; Turczan. Fl. Baical.-Dahur. (1843) p. 613, no. 408; 

 Kpw.i. <I).i. A.IT. II (1903) p. 372. 



This species is rather frequent in the tracts about the river Abakan, especially on 

 the steppes, in dry meadows, on open, grass-grown and dry declivities, where I have col- 

 lected it flowering and partly past flowering in June. In August with ripe fruits near Ust 

 Sisti-kem, Ust Tara-kem, and at Bjelosarsk. The specimens collected exhibit several 

 variations, which, however, may be grouped into the following 2 varieties: 



var. typica Wolf, 1. c. p. 64. P. bifurca a major Ledeb. Fl. Boss. II, p. 43. 



27 281 



