DICOTYLEDONKS. 

 POLY PETALS. 



RANUNCULACE^l. 



1. Clematis fusca, Turez. in Hull, de la Soc. des Natur. de Mosc. (1840), p. 60; Ledeb. Fl. 



Ross, r, p. 72.1; Max. Mel. Biol, ix, p. 587; Fi\ & Sav. Enura, rr, p. 202. 

 Habitat. Northern Ku riles! (Turez.). 1 



The plant is strictly northeastern Asiatic in its distribution. It grows in swampy 

 places throughout eastern Siberia bordering the Ochotsk Sea, descending southward on 

 the continental side as far as southern Manchuria; while on the insular side it was found 

 to come south as far as the vicinity of Hakodate in Yezo. The plant has not yet been 

 recorded from Saghalin. 



According to Franchet & Savatier,the plants found growing around Hakodate belong 

 to the var. mandshurica, Regel (Fl. Uss. p. 2, t. 2, f. 1). The plants Avhich I have col- 

 lected at Tokoro in the province of Kitami, and also at Horomui near Sapporo, have char- 

 acters more nearly approaching that variety than any of the others established by Regel. 

 But they differ in some points, which are easily noticeable. In the Yezo plants the flowers 

 are also on both the terminal and axillary peduncles, and are provided with two opposite 

 bracts; but they are always solitary, and the bracts, which are broadly ovate, obtuse, and 

 often 2-3 lobed, are placed on the peduncle a little above the middle. 



2. Clematis alpina, Miller; DC. Prod. I, p. 10. Atragene alpina, L. ; Max. Mel. Biol, rx, p. 



603; Turez. Fl. Baic.-Dahur. i, p. 25. Atr. alpina, L., var. ochotensis, Reg. '& Til. 

 Fl. Ajan. p. 20. Atr. platysepala, Trautv. & Mey. Fl. Ochot. p. 5. 



Hah. Kurile Islands (ex Turez.). Etorofu, in shady woods near Furubetsu. 



This extremely variable species is widely distributed in Europe, northern Asia and 

 Japan; and also in the Rocky Mountain region of North America. The Japanese plants, 

 especially those which grow in the cold shady woods of Yezo and the Kuriles, correspond 

 exactly to those collected in eastern Siberia and Kamtschatka, described as var. ochoten- 

 sis by Regel and Tiling. 



The American form (C. alpina, var. occidentalis, A. Gray, in Powell's Geol. of Black 

 Hills of Dakota, p. 531) can scarcely be distinguished from some of the Old World plants, 

 except, perhaps, as has been pointed out by Dr. Gray, by a greater tendency of its petals 

 to staminody, — a character which is very poorly developed in the European plant, but 

 which is seen more and more marked in the plants growing eastward. 



1 The mark ! placed after a locality of a plant which was 

 not collected by myself, indicates that the original speci- 



men of the plant thus referred to has been seen by Prof. 

 C. J. Maximowicz in the Herbaria of St. Petersburg. 



(213) 



