50 TWELFTH ANNUAL REPORT. 



P. argentea, L, Silvery Cinque-foil or Five- Finger. 



Winona county, Holzinger; Saint Paul, Miss Cathcart; Minneapolis, Herrick, Up- 

 ham; Washington county, Leonard; St . Croix Falls, Miss Field; Anoka county, Junl; 

 near Green lake, Kandiyohi county, Mrs. Terry. [vSheyenne river, Dakota, Geyer.] 



Infrequent. 



p. Peiinsylv^anica, L., var. strig"Osa, Pursh.* Cinque-foil. Potentilla. 

 Granite knolls beside the Minnesota river in the west part of Nicollet county, Par- 

 ry; Redwood Falls, Pcmherton; Worthington (common), Fonte; Luverne, Leiberg; 

 Pipestone quarry, Mrs. Bennett; Fergus Falls, Leonard. [Pembina mountain, Dakota, 

 Harard. "The common form in the prairie region" of Manitoba, Jlacoun. J West. 



P. Pennsylvanica, L., var. bipiimatifida, Torr. & Gray.** Cinque- 

 foil. 

 Pipestone county, Mrs. Bennett; plains of the Red river, Douglas, Macoun. West. 



P. Hippiaiia, Lehni. f Cinque-foil. Potentilla. 

 Plains of the Red river, Drummond, Macoun. West. 



P. effiisa, Dougl-t Cinque-foil. Potentilla. 



Higher parts of the Red river valley, plentiful, Douglas, Macoim. West. 



P. arguta, Pursh. Cinque-foil. Potentilla. 

 Common, often abundant, throughout the state. 



P. Aiiserina, L. Silver- Weed. 



Common, or frequent, throughout the north half of the state ; extending south at 

 least to Minneapolis and Murray county, Upham. 



P. friiticosa, L. Shrubby Cinque-foil. 



Abundant north of lake Superior, especially along its rocky shore, Juni, Rohcrts ; 

 also found near the Tamarack river In T. 158, R. 46, Marshall county, Upham, and at 

 the eastern border of the Red river prairie near the international boundary, Dawson, 

 Seott. (Not yet reported, but doubtless occurring rarely, in the south half of the state ; 

 found at Decorah, Iowa, Arthur.) North. 



* Potentilla Pennsylvanica, L., var. strigosa, Pursh. Low, 6 to 15 inches 

 high ; stems erect, leafy, rather stout ; leaves mostly tomentose on both surfaces, paler 

 beneath, deeply pectinate-divided or pinnatifld, segments linear, entire, with revolute 

 margins; stipules laciniate. Porter and Coulter's Flora of Colorado, following JVatson's 

 Revis., Proc. Amer. Acad., vol. viii. 



** Potentilla Pennsylvanica, L., var. bipinnatifida, Torr. & Gray. Leaflets 

 crowded (3 to 5) and often almost palmate, deeply pinnatifld (silky-pubescent but not 

 canescent above); the segments linear, elongated, mostly spreading. Torrey and 

 Gray's Flora of N. A. 



tP. HiPPiANA, Lehm. Densely white-tomentose and silky throughout; the upper 

 surface of the leaves a little darker; stems ascendint:, l to l!^ feet high, slender, 

 branching above into a dift'use cyme, stipules usually entire ; leaves pinnate, occasion- 

 ally digitate; leaflets 5 toll,cuneate-oblong, I'to 2 inches long, obtuse, incisely toothed, 

 at least towards the apex, margins not revolute ; pedicels slender; bractlets narrow ; 

 petals 2'/2 to 3! 2 lines long, exceeding the calyx; styles filiform, not glandular at base, 

 terminal; carpels 10 to 30. Porter and Coulter's Flora of Colorado, following Watson's 

 Revision. 



:j:P. effusa, Dougl. Uanescently tomentose with scattered villous hairs; stems 

 ascending, difliusely branched above, 4 to 12 inches high ; stipules lanceolate, entire 

 or incised ; leaflets 5 to 11, interruptedly pinnate, the alternate ones often smaller, 

 cuneate-oblong, coarsely incised-serrate or dentate, the smaller leaflets 3- to 5- tooth- 

 ed ; pedicels slender ; sepals and the much smaller bractlets acuminate. 2 to 3 lines 

 long, equaling or exceeding the obcordate petals ; carpels 10. Porter and Coulter's 

 Flora of Colorado, following Watson's Revision. 



