232 



P. frag i 'form is : — Akenes elongated-ovoid, larger (1.8 mm. long), smooth, with a more 

 or less prominently keeled ridge on the margin, the veins inconspicuous. 



P. villosa : — Akenes elongated-ovoid, smooth, with the margin more or less prominently 

 ridged, the veins inconspicuous. 



P. gelida : — Akenes ovoid, glabrous, with 3-4 distinct curved veins running almost par- 

 allel, obtusely ridged. 



It will be seen from the characters of the ripened akenes, that P. grandijiora and geli- 

 da are closely related; while P. frag /form is and cillosa form another group. 



88. Potentilla anserina L. Sp. p. 495; Ledeb. Fl. Ross, ir, p. 44; Lehm. Rev. Pot. p. 



188; Watson, Proc. Am. Acad, vm, p. 562; Fr. & Sav. Enum. i, p. 131. 

 Hah. JEtorofti, at Rausu. 



Distrib. Arctic and temperate regions of Europe, Asia and North America. Also 

 in South America and Australia. 



89. Agrimonia Eupatoria, L. Sp. p. 448; Ledeb. Fl. Ross, n, p. 31; Torr. & Gray, Fl. N\ 



Am. i, p. 431; Forbes & Hemsley, Ind. Fl. Sin. p. 246. jL.pilosa, Ledeb. Ind. 

 Sem. H. Dorp. Suppl., 1823, p. 1. A. riscidala, Bunge, Enum. PI. Chin. Bor. 

 p. 26. 

 Hdb. SMJcotan. 



Distrib. Throughout the temperate regions of the northern hemisphere. 



90. Sanguisorba tenuifolia, Fisch. ex Link., Enum. PI. Hort. Berol. I, p. 144; Ledeb. Fl. 



Ross, ii, p. 28; Max. Mel. Biol, ix, p. 152.— Var. alba, Trautv. & Mey. Fl. Ochot. 

 p. 35; Max., I. c, p. 153. Poterium tenuifolitnn, var. allium, Fr. & Sav. n, p. 342; 

 Forbes & Hemsley, Ind. Fl. Sin. p. 247* 

 Hah. Sliikotan. Ptorof/t, at Rubetsu. 



Distrib. Eastern Siberia, Kamtschatka, Manchuria, Dahuria, China, Corea, northern 

 and middle Japan and Saghalin. 



91. Rosa acicularis, Lindl. Ros. Monog. p. 44, t. 8; C. A. Meyer, Zimmtrosen, p. 15; 



Crepin, Prim. Monog. Ros. p. 299; Regel, Tent. Ros. Monog. p. 18. 

 11(d). Ptorofu, in roadside thickets at Tsurubetsu. 



Distrib. Europe, northern Asia, China, northern and middle Japan, and in Xorth 

 America. 



92. Rosa rugosa, Thunb. Fl. Jap. p. 213; C. A. Mey., Zimmtrosen, p. 32; Crepin, Prim. 



Monog. Ros. p. 336; Regel. Tent. Ros. p. 24; Sieb. & Zucc. Fl. Jap. I, p. 66, t. 



28. P. kamtschatica, Red. Ros. i, p. 47. 

 Hab. On the sandy beach: SMkotan. Ptorofu, at Tsurubetsu, Shana and Shibetoro, 

 Shimushu (S. Akakabe). Kuril s (ex Georgi, Pallas). 



Distrib. Japan, Saghalin, Kamtschatka, Manchuria, Corea and China. 



93. Pyrus sambucifolia, Cham. & Schlecht. in Lmim'ii, n, p. 36; Torr. «v. Gray, Fl. X. Am. 



i, p. 472; Ledeb. Fl. Ross, n, p. 99; Max. Prim.Fl. Amur. p. 103, and Mel. Biol. 



ix, p. 172 (under Sorbus). 

 Hob. Kurile Islands (ex Pallas) . Etorofu, very common on hillsides, forming stunted 



