62 MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



Illustrations : Plate 20, f. 1 ; dissection of flower, /. 2 ; pistil, /. 3 ; stamens /. 4 : 

 fruiting hypanthium and calyx, /. 5. 



Low and subcespitose ; stems less than 1 dm. high, when young slightly villous, 

 glabrate in age. Stipules ovate, acute. Basal leaves pinnately rather than palmately 5- 

 foliolate, thick and somewhat coriaceous, with ribs prominent beneath ; leaflets obovate 

 in outline, the two lower much smaller, all deeply cleft into oblong divisions and 

 more or less decurrent, especially in the type specimens. Hypanthium silky-villous, in 

 fruit about 5 mm. in diameter. Bractlets oblong, obtuse, much shorter than the ovate- 

 lanceolate acute sepals. Petals obcordate, much longer than the sepals. 



This species much resembles the preceding, especially the var. glaucophylla, but it is 

 a more cespitose plant and has smaller and thicker leaves with prominent veins beneath. 

 The leaflets are generally five and the lower often attached a little lower down and de- 

 current on the petiole, but this is not always the case by far. It is found in the higher 

 mountains of Utah, Wyoming, Montana and British America. 



Utah: S. Watson (King's Exped.) No. 329. 1869 (type). 



Wyoming: J. N. Rose, Nos. 645 and 256. 1893. 



MoiLtana: Rydberg and J. H. Flodman, Nos. 575, 571 and 572. 1896. 



Bi-itish Columbia (?) .• Macoun, No. 7246, 1891, in part; Nos. 16726 and 16727. 



Alberta: John Macoun, 1897. 



37. Potentilla Ranunculus Lange. 



Potentllla Iianuncuhig Lange, Fl. Dan. pi. 2964. 



Lange, Consp. Fl. Groenl. 7 ; Rosenvinge 1. c. (555 ; Rydb. Bull. Torr. Bot. Club, 23 : 396. 



iLLUSTEATioifs : Fl. Dan. pi. 296^. 



Cespitose, rootstock thick, long and thickly covered by brown scale-like remnants of stipules and 

 petioles. Stems ascending, 1-3 dm. high, glabrate or slightly pubescent, 2-4-flowered and few-leaved. 

 Basal leaves digitately 5-foliolate, thin, not strongly veined, glaucous, glabrous or ciliate ; leaflets ob- 

 ovate, deeply 5-7-cleft into large lanceolate obtuse teeth ; stem leaves ternate. Petals slightly emar- 

 ginate, slightly longer than the sepals, pale yellow. 



Greenland: A. Hartz, No. 8024. 1890. 



38. Potentilla multisecta (Wats.) Rydb. 



Potentilla dirersifolia var. multisecta Wats. King's Rep. 5 : 86. 1871. 

 Coulter, U. (^. Geol. Surv. 1872 : 765. 1872. 



Potentilla disseeta var. multisecta Wats. Proc. Am. Acad. 8 : 557. 1873 

 Macoun, Cat. Can. PI. 517, 1886; Coult. Man. Rocky Mts. 85. 



