78 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
Macoun, Cat. Can. PI. 140. 
Intusrrations: Lehm. Rev. Pot. pl. 517. Pate 31, f. 6; dissection of flower, f. 7; 
pistil, f. 8; stamen, f. 9; fruiting hypanthium and calyx, f. 10. 
Stems from a scaly creeping rootstock, minutely puberulent, 2-3 dm. high, few- 
leaved. Stipules generally very broad, elliptic and obtuse, thin, .5-1 em. long. Leaves 
ternate, very thin, in all specimens seen perfectly glabrous; leaflets broadly obovate, 
sometimes petiolate, deeply incised-serrate with obtuse teeth, entire toward the base and 
the lateral ones somewhat oblique. Flowers 1.5-2 em. in diameter. Hypanthium mi- 
nutely puberulent, or glabrous, in fruit nearly 1 em. in diameter; bractlets oval, obtuse 
or acutish, about equalling the ovate acute sepals. Petals obovate, cuneate, deeply emar- 
ginate, exceeding the sepals by about one half. 
This is near P. gelida and has generally been included therein, but differs in its 
much larger flowers, lighter foliage and a thicker creeping rootstock ; it is best to regard 
it as at least a good variety, and if the isolated range is taken into consideration, it is still 
better to regard it as a species. P. flabellifolia is found on the higher mountains of Ore- 
gon and Washington, while P. gelida grows in the Caucasus and eastern Siberia. 
60. Potentilla Friesiana Lange. 
Potentilla Friesiana Lange, Consp. Fl. Groenl. 9. 1880. 
Rosenvinge, tbid., 656. 
Potentilla maculata Fries. acc. to Lange, 1. ¢. 
InuustRAtTions: Fl. Dan. pl. 2965. 
Stems several from a thick rootstock, 1 dm. high or more, ascending or erect, pilose with long 
hairs. Basal leaves numerous, short-petioled, glutinous, long-pilose especially beneath. Stem leaves 
1 or 2 ; leaflets broadly obovate, crenately 3-4-toothed at the apex. Cyme several-flowered, crisp-lanate 
and glandular ; bractlets elliptic, obtuse, half as long as the ovate acute sepals. Petals twice as long 
as the sepals, broadly emarginate. 
This species must be very nearly related to P. nana and perhaps represents only an overgrown 
form of that plant. 
Greenland, Disco: *Th. Fries. 
61. Potentilla fragiformis Willd. 
Potentilla fragifornis Willd.; Schlecht. Mag. Ges. Naturf. Fr. Berlin, 7: 294. 
LS1Se 
Lehm. Mon. 28 and 163; Seringe in DC. Prod. 2: 586; Sprengel, Syst. Veg. 2: 
540; Don, Gard. Dict. 2: 550: Dietr. Syn. Pl. 3: 178; Walp. Ann. 2: 504; Lehm. 
Rey. Pot: 155. 
